668889788

素因数分解:

$2^2\times 7^4\times {\mathrm{257}}^1\times {\mathrm{271}}^1$

素因数の和:560

約数の個数: 60

約数和(自身を含む): 1375940832

約数和(自身を除く): 707051044

約数列:

[1, 2, 4, 7, 14, 28, 49, 98, 196, 257, 271, 343, 514, 542, 686, 1028, 1084, 1372, 1799, 1897, 2401, 3598, 3794, 4802, 7196, 7588, 9604, 12593, 13279, 25186, 26558, 50372, 53116, 69647, 88151, 92953, 139294, 176302, 185906, 278588, 352604, 371812, 487529, 617057, 650671, 975058, 1234114, 1301342, 1950116, 2468228, 2602684, 3412703, 6825406, 13650812, 23888921, 47777842, 95555684, 167222447, 334444894, 668889788]

約数ペア:

[(1, 668889788), (2, 334444894), (4, 167222447), (7, 95555684), (14, 47777842), (28, 23888921), (49, 13650812), (98, 6825406), (196, 3412703), (257, 2602684), (271, 2468228), (343, 1950116), (514, 1301342), (542, 1234114), (686, 975058), (1028, 650671), (1084, 617057), (1372, 487529), (1799, 371812), (1897, 352604), (2401, 278588), (3598, 185906), (3794, 176302), (4802, 139294), (7196, 92953), (7588, 88151), (9604, 69647), (12593, 53116), (13279, 50372), (25186, 26558)]