287978840

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{71}}^1\times {\mathrm{3271}}^1$

素因数の和:3384

約数の個数: 64

約数和(自身を含む): 678481920

約数和(自身を除く): 390503080

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 71, 124, 142, 155, 248, 284, 310, 355, 568, 620, 710, 1240, 1420, 2201, 2840, 3271, 4402, 6542, 8804, 11005, 13084, 16355, 17608, 22010, 26168, 32710, 44020, 65420, 88040, 101401, 130840, 202802, 232241, 405604, 464482, 507005, 811208, 928964, 1014010, 1161205, 1857928, 2028020, 2322410, 4056040, 4644820, 7199471, 9289640, 14398942, 28797884, 35997355, 57595768, 71994710, 143989420, 287978840]

約数ペア:

[(1, 287978840), (2, 143989420), (4, 71994710), (5, 57595768), (8, 35997355), (10, 28797884), (20, 14398942), (31, 9289640), (40, 7199471), (62, 4644820), (71, 4056040), (124, 2322410), (142, 2028020), (155, 1857928), (248, 1161205), (284, 1014010), (310, 928964), (355, 811208), (568, 507005), (620, 464482), (710, 405604), (1240, 232241), (1420, 202802), (2201, 130840), (2840, 101401), (3271, 88040), (4402, 65420), (6542, 44020), (8804, 32710), (11005, 26168), (13084, 22010), (16355, 17608)]