206920980

素因数分解:

$2^2\times 3^4\times 5^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{257}}^1$

素因数の和:356

約数の個数: 240

約数和(自身を含む): 755225856

約数和(自身を除く): 548304876

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 27, 28, 30, 35, 36, 42, 45, 54, 60, 63, 70, 71, 81, 84, 90, 105, 108, 126, 135, 140, 142, 162, 180, 189, 210, 213, 252, 257, 270, 284, 315, 324, 355, 378, 405, 420, 426, 497, 514, 540, 567, 630, 639, 710, 756, 771, 810, 852, 945, 994, 1028, 1065, 1134, 1260, 1278, 1285, 1420, 1491, 1542, 1620, 1799, 1890, 1917, 1988, 2130, 2268, 2313, 2485, 2556, 2570, 2835, 2982, 3084, 3195, 3598, 3780, 3834, 3855, 4260, 4473, 4626, 4970, 5140, 5397, 5670, 5751, 5964, 6390, 6939, 7196, 7455, 7668, 7710, 8946, 8995, 9252, 9585, 9940, 10794, 11340, 11502, 11565, 12780, 13419, 13878, 14910, 15420, 16191, 17892, 17990, 18247, 19170, 20817, 21588, 22365, 23004, 23130, 26838, 26985, 27756, 28755, 29820, 32382, 34695, 35980, 36494, 38340, 40257, 41634, 44730, 46260, 48573, 53676, 53970, 54741, 57510, 64764, 67095, 69390, 72988, 80514, 80955, 83268, 89460, 91235, 97146, 104085, 107940, 109482, 115020, 127729, 134190, 138780, 145719, 161028, 161910, 164223, 182470, 194292, 201285, 208170, 218964, 242865, 255458, 268380, 273705, 291438, 323820, 328446, 364940, 383187, 402570, 416340, 485730, 492669, 510916, 547410, 582876, 638645, 656892, 728595, 766374, 805140, 821115, 971460, 985338, 1094820, 1149561, 1277290, 1457190, 1478007, 1532748, 1642230, 1915935, 1970676, 2299122, 2463345, 2554580, 2914380, 2956014, 3284460, 3448683, 3831870, 4598244, 4926690, 5747805, 5912028, 6897366, 7390035, 7663740, 9853380, 10346049, 11495610, 13794732, 14780070, 17243415, 20692098, 22991220, 29560140, 34486830, 41384196, 51730245, 68973660, 103460490, 206920980]

約数ペア:

[(1, 206920980), (2, 103460490), (3, 68973660), (4, 51730245), (5, 41384196), (6, 34486830), (7, 29560140), (9, 22991220), (10, 20692098), (12, 17243415), (14, 14780070), (15, 13794732), (18, 11495610), (20, 10346049), (21, 9853380), (27, 7663740), (28, 7390035), (30, 6897366), (35, 5912028), (36, 5747805), (42, 4926690), (45, 4598244), (54, 3831870), (60, 3448683), (63, 3284460), (70, 2956014), (71, 2914380), (81, 2554580), (84, 2463345), (90, 2299122), (105, 1970676), (108, 1915935), (126, 1642230), (135, 1532748), (140, 1478007), (142, 1457190), (162, 1277290), (180, 1149561), (189, 1094820), (210, 985338), (213, 971460), (252, 821115), (257, 805140), (270, 766374), (284, 728595), (315, 656892), (324, 638645), (355, 582876), (378, 547410), (405, 510916), (420, 492669), (426, 485730), (497, 416340), (514, 402570), (540, 383187), (567, 364940), (630, 328446), (639, 323820), (710, 291438), (756, 273705), (771, 268380), (810, 255458), (852, 242865), (945, 218964), (994, 208170), (1028, 201285), (1065, 194292), (1134, 182470), (1260, 164223), (1278, 161910), (1285, 161028), (1420, 145719), (1491, 138780), (1542, 134190), (1620, 127729), (1799, 115020), (1890, 109482), (1917, 107940), (1988, 104085), (2130, 97146), (2268, 91235), (2313, 89460), (2485, 83268), (2556, 80955), (2570, 80514), (2835, 72988), (2982, 69390), (3084, 67095), (3195, 64764), (3598, 57510), (3780, 54741), (3834, 53970), (3855, 53676), (4260, 48573), (4473, 46260), (4626, 44730), (4970, 41634), (5140, 40257), (5397, 38340), (5670, 36494), (5751, 35980), (5964, 34695), (6390, 32382), (6939, 29820), (7196, 28755), (7455, 27756), (7668, 26985), (7710, 26838), (8946, 23130), (8995, 23004), (9252, 22365), (9585, 21588), (9940, 20817), (10794, 19170), (11340, 18247), (11502, 17990), (11565, 17892), (12780, 16191), (13419, 15420), (13878, 14910)]