815339120

素因数分解:

$2^4\times 5^1\times {\mathrm{41}}^1\times {\mathrm{248579}}^1$

素因数の和:248633

約数の個数: 40

約数和(自身を含む): 1941906960

約数和(自身を除く): 1126567840

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 41, 80, 82, 164, 205, 328, 410, 656, 820, 1640, 3280, 248579, 497158, 994316, 1242895, 1988632, 2485790, 3977264, 4971580, 9943160, 10191739, 19886320, 20383478, 40766956, 50958695, 81533912, 101917390, 163067824, 203834780, 407669560, 815339120]

約数ペア:

[(1, 815339120), (2, 407669560), (4, 203834780), (5, 163067824), (8, 101917390), (10, 81533912), (16, 50958695), (20, 40766956), (40, 20383478), (41, 19886320), (80, 10191739), (82, 9943160), (164, 4971580), (205, 3977264), (328, 2485790), (410, 1988632), (656, 1242895), (820, 994316), (1640, 497158), (3280, 248579)]