6499990720

素因数分解:

$2^6\times 5^1\times {\mathrm{31}}^1\times {\mathrm{655241}}^1$

素因数の和:655289

約数の個数: 56

約数和(自身を含む): 15977420928

約数和(自身を除く): 9477430208

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 32, 40, 62, 64, 80, 124, 155, 160, 248, 310, 320, 496, 620, 992, 1240, 1984, 2480, 4960, 9920, 655241, 1310482, 2620964, 3276205, 5241928, 6552410, 10483856, 13104820, 20312471, 20967712, 26209640, 40624942, 41935424, 52419280, 81249884, 101562355, 104838560, 162499768, 203124710, 209677120, 324999536, 406249420, 649999072, 812498840, 1299998144, 1624997680, 3249995360, 6499990720]

約数ペア:

[(1, 6499990720), (2, 3249995360), (4, 1624997680), (5, 1299998144), (8, 812498840), (10, 649999072), (16, 406249420), (20, 324999536), (31, 209677120), (32, 203124710), (40, 162499768), (62, 104838560), (64, 101562355), (80, 81249884), (124, 52419280), (155, 41935424), (160, 40624942), (248, 26209640), (310, 20967712), (320, 20312471), (496, 13104820), (620, 10483856), (992, 6552410), (1240, 5241928), (1984, 3276205), (2480, 2620964), (4960, 1310482), (9920, 655241)]