1640802780

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{223}}^1\times {\mathrm{997}}^1$

素因数の和:1276

約数の個数: 144

約数和(自身を含む): 5126494464

約数和(自身を除く): 3485691684

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 41, 45, 60, 82, 90, 123, 164, 180, 205, 223, 246, 369, 410, 446, 492, 615, 669, 738, 820, 892, 997, 1115, 1230, 1338, 1476, 1845, 1994, 2007, 2230, 2460, 2676, 2991, 3345, 3690, 3988, 4014, 4460, 4985, 5982, 6690, 7380, 8028, 8973, 9143, 9970, 10035, 11964, 13380, 14955, 17946, 18286, 19940, 20070, 27429, 29910, 35892, 36572, 40140, 40877, 44865, 45715, 54858, 59820, 81754, 82287, 89730, 91430, 109716, 122631, 137145, 163508, 164574, 179460, 182860, 204385, 222331, 245262, 274290, 329148, 367893, 408770, 411435, 444662, 490524, 548580, 613155, 666993, 735786, 817540, 822870, 889324, 1111655, 1226310, 1333986, 1471572, 1645740, 1839465, 2000979, 2223310, 2452620, 2667972, 3334965, 3678930, 4001958, 4446620, 6669930, 7357860, 8003916, 9115571, 10004895, 13339860, 18231142, 20009790, 27346713, 36462284, 40019580, 45577855, 54693426, 82040139, 91155710, 109386852, 136733565, 164080278, 182311420, 273467130, 328160556, 410200695, 546934260, 820401390, 1640802780]

約数ペア:

[(1, 1640802780), (2, 820401390), (3, 546934260), (4, 410200695), (5, 328160556), (6, 273467130), (9, 182311420), (10, 164080278), (12, 136733565), (15, 109386852), (18, 91155710), (20, 82040139), (30, 54693426), (36, 45577855), (41, 40019580), (45, 36462284), (60, 27346713), (82, 20009790), (90, 18231142), (123, 13339860), (164, 10004895), (180, 9115571), (205, 8003916), (223, 7357860), (246, 6669930), (369, 4446620), (410, 4001958), (446, 3678930), (492, 3334965), (615, 2667972), (669, 2452620), (738, 2223310), (820, 2000979), (892, 1839465), (997, 1645740), (1115, 1471572), (1230, 1333986), (1338, 1226310), (1476, 1111655), (1845, 889324), (1994, 822870), (2007, 817540), (2230, 735786), (2460, 666993), (2676, 613155), (2991, 548580), (3345, 490524), (3690, 444662), (3988, 411435), (4014, 408770), (4460, 367893), (4985, 329148), (5982, 274290), (6690, 245262), (7380, 222331), (8028, 204385), (8973, 182860), (9143, 179460), (9970, 164574), (10035, 163508), (11964, 137145), (13380, 122631), (14955, 109716), (17946, 91430), (18286, 89730), (19940, 82287), (20070, 81754), (27429, 59820), (29910, 54858), (35892, 45715), (36572, 44865), (40140, 40877)]