639888915

素因数分解:

$3^1\times 5^1\times {\mathrm{29}}^1\times {\mathrm{37}}^1\times {\mathrm{83}}^1\times {\mathrm{479}}^1$

素因数の和:636

約数の個数: 64

約数和(自身を含む): 1103155200

約数和(自身を除く): 463266285

約数列:

[1, 3, 5, 15, 29, 37, 83, 87, 111, 145, 185, 249, 415, 435, 479, 555, 1073, 1245, 1437, 2395, 2407, 3071, 3219, 5365, 7185, 7221, 9213, 12035, 13891, 15355, 16095, 17723, 36105, 39757, 41673, 46065, 53169, 69455, 88615, 89059, 119271, 198785, 208365, 265845, 267177, 445295, 513967, 596355, 1152953, 1335885, 1471009, 1541901, 2569835, 3458859, 4413027, 5764765, 7355045, 7709505, 17294295, 22065135, 42659261, 127977783, 213296305, 639888915]

約数ペア:

[(1, 639888915), (3, 213296305), (5, 127977783), (15, 42659261), (29, 22065135), (37, 17294295), (83, 7709505), (87, 7355045), (111, 5764765), (145, 4413027), (185, 3458859), (249, 2569835), (415, 1541901), (435, 1471009), (479, 1335885), (555, 1152953), (1073, 596355), (1245, 513967), (1437, 445295), (2395, 267177), (2407, 265845), (3071, 208365), (3219, 198785), (5365, 119271), (7185, 89059), (7221, 88615), (9213, 69455), (12035, 53169), (13891, 46065), (15355, 41673), (16095, 39757), (17723, 36105)]