638446536

素因数分解:

$2^3\times 3^7\times 7^1\times {\mathrm{13}}^1\times {\mathrm{401}}^1$

素因数の和:448

約数の個数: 256

約数和(自身を含む): 2215180800

約数和(自身を除く): 1576734264

約数列:

[1, 2, 3, 4, 6, 7, 8, 9, 12, 13, 14, 18, 21, 24, 26, 27, 28, 36, 39, 42, 52, 54, 56, 63, 72, 78, 81, 84, 91, 104, 108, 117, 126, 156, 162, 168, 182, 189, 216, 234, 243, 252, 273, 312, 324, 351, 364, 378, 401, 468, 486, 504, 546, 567, 648, 702, 728, 729, 756, 802, 819, 936, 972, 1053, 1092, 1134, 1203, 1404, 1458, 1512, 1604, 1638, 1701, 1944, 2106, 2184, 2187, 2268, 2406, 2457, 2807, 2808, 2916, 3159, 3208, 3276, 3402, 3609, 4212, 4374, 4536, 4812, 4914, 5103, 5213, 5614, 5832, 6318, 6552, 6804, 7218, 7371, 8421, 8424, 8748, 9477, 9624, 9828, 10206, 10426, 10827, 11228, 12636, 13608, 14436, 14742, 15309, 15639, 16842, 17496, 18954, 19656, 20412, 20852, 21654, 22113, 22456, 25263, 25272, 28431, 28872, 29484, 30618, 31278, 32481, 33684, 36491, 37908, 40824, 41704, 43308, 44226, 46917, 50526, 56862, 58968, 61236, 62556, 64962, 66339, 67368, 72982, 75789, 75816, 86616, 88452, 93834, 97443, 101052, 109473, 113724, 122472, 125112, 129924, 132678, 140751, 145964, 151578, 176904, 187668, 194886, 199017, 202104, 218946, 227367, 227448, 259848, 265356, 281502, 291928, 292329, 303156, 328419, 375336, 389772, 398034, 422253, 437892, 454734, 530712, 563004, 584658, 606312, 656838, 682101, 779544, 796068, 844506, 875784, 876987, 909468, 985257, 1126008, 1169316, 1266759, 1313676, 1364202, 1592136, 1689012, 1753974, 1818936, 1970514, 2046303, 2338632, 2533518, 2627352, 2728404, 2955771, 3378024, 3507948, 3800277, 3941028, 4092606, 5067036, 5456808, 5911542, 6138909, 7015896, 7600554, 7882056, 8185212, 8867313, 10134072, 11400831, 11823084, 12277818, 15201108, 16370424, 17734626, 22801662, 23646168, 24555636, 26601939, 30402216, 35469252, 45603324, 49111272, 53203878, 70938504, 79805817, 91206648, 106407756, 159611634, 212815512, 319223268, 638446536]

約数ペア:

[(1, 638446536), (2, 319223268), (3, 212815512), (4, 159611634), (6, 106407756), (7, 91206648), (8, 79805817), (9, 70938504), (12, 53203878), (13, 49111272), (14, 45603324), (18, 35469252), (21, 30402216), (24, 26601939), (26, 24555636), (27, 23646168), (28, 22801662), (36, 17734626), (39, 16370424), (42, 15201108), (52, 12277818), (54, 11823084), (56, 11400831), (63, 10134072), (72, 8867313), (78, 8185212), (81, 7882056), (84, 7600554), (91, 7015896), (104, 6138909), (108, 5911542), (117, 5456808), (126, 5067036), (156, 4092606), (162, 3941028), (168, 3800277), (182, 3507948), (189, 3378024), (216, 2955771), (234, 2728404), (243, 2627352), (252, 2533518), (273, 2338632), (312, 2046303), (324, 1970514), (351, 1818936), (364, 1753974), (378, 1689012), (401, 1592136), (468, 1364202), (486, 1313676), (504, 1266759), (546, 1169316), (567, 1126008), (648, 985257), (702, 909468), (728, 876987), (729, 875784), (756, 844506), (802, 796068), (819, 779544), (936, 682101), (972, 656838), (1053, 606312), (1092, 584658), (1134, 563004), (1203, 530712), (1404, 454734), (1458, 437892), (1512, 422253), (1604, 398034), (1638, 389772), (1701, 375336), (1944, 328419), (2106, 303156), (2184, 292329), (2187, 291928), (2268, 281502), (2406, 265356), (2457, 259848), (2807, 227448), (2808, 227367), (2916, 218946), (3159, 202104), (3208, 199017), (3276, 194886), (3402, 187668), (3609, 176904), (4212, 151578), (4374, 145964), (4536, 140751), (4812, 132678), (4914, 129924), (5103, 125112), (5213, 122472), (5614, 113724), (5832, 109473), (6318, 101052), (6552, 97443), (6804, 93834), (7218, 88452), (7371, 86616), (8421, 75816), (8424, 75789), (8748, 72982), (9477, 67368), (9624, 66339), (9828, 64962), (10206, 62556), (10426, 61236), (10827, 58968), (11228, 56862), (12636, 50526), (13608, 46917), (14436, 44226), (14742, 43308), (15309, 41704), (15639, 40824), (16842, 37908), (17496, 36491), (18954, 33684), (19656, 32481), (20412, 31278), (20852, 30618), (21654, 29484), (22113, 28872), (22456, 28431), (25263, 25272)]