646989460

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^2\times {\mathrm{79}}^1\times {\mathrm{2423}}^1$

素因数の和:2537

約数の個数: 72

約数和(自身を含む): 1490469120

約数和(自身を除く): 843479660

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 79, 130, 158, 169, 260, 316, 338, 395, 676, 790, 845, 1027, 1580, 1690, 2054, 2423, 3380, 4108, 4846, 5135, 9692, 10270, 12115, 13351, 20540, 24230, 26702, 31499, 48460, 53404, 62998, 66755, 125996, 133510, 157495, 191417, 267020, 314990, 382834, 409487, 629980, 765668, 818974, 957085, 1637948, 1914170, 2047435, 2488421, 3828340, 4094870, 4976842, 8189740, 9953684, 12442105, 24884210, 32349473, 49768420, 64698946, 129397892, 161747365, 323494730, 646989460]

約数ペア:

[(1, 646989460), (2, 323494730), (4, 161747365), (5, 129397892), (10, 64698946), (13, 49768420), (20, 32349473), (26, 24884210), (52, 12442105), (65, 9953684), (79, 8189740), (130, 4976842), (158, 4094870), (169, 3828340), (260, 2488421), (316, 2047435), (338, 1914170), (395, 1637948), (676, 957085), (790, 818974), (845, 765668), (1027, 629980), (1580, 409487), (1690, 382834), (2054, 314990), (2423, 267020), (3380, 191417), (4108, 157495), (4846, 133510), (5135, 125996), (9692, 66755), (10270, 62998), (12115, 53404), (13351, 48460), (20540, 31499), (24230, 26702)]