1978357640

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{7065563}}^1$

素因数の和:7065581

約数の個数: 32

約数和(自身を含む): 5087206080

約数和(自身を除く): 3108848440

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 7065563, 14131126, 28262252, 35327815, 49458941, 56524504, 70655630, 98917882, 141311260, 197835764, 247294705, 282622520, 395671528, 494589410, 989178820, 1978357640]

約数ペア:

[(1, 1978357640), (2, 989178820), (4, 494589410), (5, 395671528), (7, 282622520), (8, 247294705), (10, 197835764), (14, 141311260), (20, 98917882), (28, 70655630), (35, 56524504), (40, 49458941), (56, 35327815), (70, 28262252), (140, 14131126), (280, 7065563)]