420090640

素因数分解:

$2^4\times 5^1\times {\mathrm{421}}^1\times {\mathrm{12473}}^1$

素因数の和:12907

約数の個数: 40

約数和(自身を含む): 979109208

約数和(自身を除く): 559018568

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 421, 842, 1684, 2105, 3368, 4210, 6736, 8420, 12473, 16840, 24946, 33680, 49892, 62365, 99784, 124730, 199568, 249460, 498920, 997840, 5251133, 10502266, 21004532, 26255665, 42009064, 52511330, 84018128, 105022660, 210045320, 420090640]

約数ペア:

[(1, 420090640), (2, 210045320), (4, 105022660), (5, 84018128), (8, 52511330), (10, 42009064), (16, 26255665), (20, 21004532), (40, 10502266), (80, 5251133), (421, 997840), (842, 498920), (1684, 249460), (2105, 199568), (3368, 124730), (4210, 99784), (6736, 62365), (8420, 49892), (12473, 33680), (16840, 24946)]