51580240

素因数分解:

$2^4\times 5^1\times {\mathrm{644753}}^1$

素因数の和:644766

約数の個数: 20

約数和(自身を含む): 119924244

約数和(自身を除く): 68344004

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 644753, 1289506, 2579012, 3223765, 5158024, 6447530, 10316048, 12895060, 25790120, 51580240]

約数ペア:

[(1, 51580240), (2, 25790120), (4, 12895060), (5, 10316048), (8, 6447530), (10, 5158024), (16, 3223765), (20, 2579012), (40, 1289506), (80, 644753)]