19802019978

素因数分解:

$2^1\times 3^2\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{47}}^1\times {\mathrm{241}}^2$

素因数の和:581

約数の個数: 144

約数和(自身を含む): 48912933888

約数和(自身を除く): 29110913910

約数列:

[1, 2, 3, 6, 9, 13, 18, 26, 31, 39, 47, 62, 78, 93, 94, 117, 141, 186, 234, 241, 279, 282, 403, 423, 482, 558, 611, 723, 806, 846, 1209, 1222, 1446, 1457, 1833, 2169, 2418, 2914, 3133, 3627, 3666, 4338, 4371, 5499, 6266, 7254, 7471, 8742, 9399, 10998, 11327, 13113, 14942, 18798, 18941, 22413, 22654, 26226, 28197, 33981, 37882, 44826, 56394, 56823, 58081, 67239, 67962, 97123, 101943, 113646, 116162, 134478, 147251, 170469, 174243, 194246, 203886, 291369, 294502, 340938, 348486, 351137, 441753, 522729, 582738, 702274, 755053, 874107, 883506, 1045458, 1053411, 1325259, 1510106, 1748214, 1800511, 2106822, 2265159, 2650518, 2729807, 3160233, 3601022, 4530318, 4564781, 5401533, 5459614, 6320466, 6795477, 8189421, 9129562, 10803066, 13590954, 13694343, 16204599, 16378842, 23406643, 24568263, 27388686, 32409198, 35487491, 41083029, 46813286, 49136526, 70219929, 70974982, 82166058, 84624017, 106462473, 140439858, 169248034, 210659787, 212924946, 253872051, 319387419, 421319574, 507744102, 638774838, 761616153, 1100112221, 1523232306, 2200224442, 3300336663, 6600673326, 9901009989, 19802019978]

約数ペア:

[(1, 19802019978), (2, 9901009989), (3, 6600673326), (6, 3300336663), (9, 2200224442), (13, 1523232306), (18, 1100112221), (26, 761616153), (31, 638774838), (39, 507744102), (47, 421319574), (62, 319387419), (78, 253872051), (93, 212924946), (94, 210659787), (117, 169248034), (141, 140439858), (186, 106462473), (234, 84624017), (241, 82166058), (279, 70974982), (282, 70219929), (403, 49136526), (423, 46813286), (482, 41083029), (558, 35487491), (611, 32409198), (723, 27388686), (806, 24568263), (846, 23406643), (1209, 16378842), (1222, 16204599), (1446, 13694343), (1457, 13590954), (1833, 10803066), (2169, 9129562), (2418, 8189421), (2914, 6795477), (3133, 6320466), (3627, 5459614), (3666, 5401533), (4338, 4564781), (4371, 4530318), (5499, 3601022), (6266, 3160233), (7254, 2729807), (7471, 2650518), (8742, 2265159), (9399, 2106822), (10998, 1800511), (11327, 1748214), (13113, 1510106), (14942, 1325259), (18798, 1053411), (18941, 1045458), (22413, 883506), (22654, 874107), (26226, 755053), (28197, 702274), (33981, 582738), (37882, 522729), (44826, 441753), (56394, 351137), (56823, 348486), (58081, 340938), (67239, 294502), (67962, 291369), (97123, 203886), (101943, 194246), (113646, 174243), (116162, 170469), (134478, 147251)]