378438520

素因数分解:

$2^3\times 5^1\times {\mathrm{71}}^1\times {\mathrm{133253}}^1$

素因数の和:133335

約数の個数: 32

約数和(自身を含む): 863485920

約数和(自身を除く): 485047400

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 71, 142, 284, 355, 568, 710, 1420, 2840, 133253, 266506, 533012, 666265, 1066024, 1332530, 2665060, 5330120, 9460963, 18921926, 37843852, 47304815, 75687704, 94609630, 189219260, 378438520]

約数ペア:

[(1, 378438520), (2, 189219260), (4, 94609630), (5, 75687704), (8, 47304815), (10, 37843852), (20, 18921926), (40, 9460963), (71, 5330120), (142, 2665060), (284, 1332530), (355, 1066024), (568, 666265), (710, 533012), (1420, 266506), (2840, 133253)]