818660440

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{881}}^1\times {\mathrm{1787}}^1$

素因数の和:2692

約数の個数: 64

約数和(自身を含む): 1987040160

約数和(自身を除く): 1168379720

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 881, 1762, 1787, 3524, 3574, 4405, 7048, 7148, 8810, 8935, 11453, 14296, 17620, 17870, 22906, 23231, 35240, 35740, 45812, 46462, 57265, 71480, 91624, 92924, 114530, 116155, 185848, 229060, 232310, 458120, 464620, 929240, 1574347, 3148694, 6297388, 7871735, 12594776, 15743470, 20466511, 31486940, 40933022, 62973880, 81866044, 102332555, 163732088, 204665110, 409330220, 818660440]

約数ペア:

[(1, 818660440), (2, 409330220), (4, 204665110), (5, 163732088), (8, 102332555), (10, 81866044), (13, 62973880), (20, 40933022), (26, 31486940), (40, 20466511), (52, 15743470), (65, 12594776), (104, 7871735), (130, 6297388), (260, 3148694), (520, 1574347), (881, 929240), (1762, 464620), (1787, 458120), (3524, 232310), (3574, 229060), (4405, 185848), (7048, 116155), (7148, 114530), (8810, 92924), (8935, 91624), (11453, 71480), (14296, 57265), (17620, 46462), (17870, 45812), (22906, 35740), (23231, 35240)]