63980

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{457}}^1$

素因数の和:473

約数の個数: 24

約数和(自身を含む): 153888

約数和(自身を除く): 89908

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 457, 914, 1828, 2285, 3199, 4570, 6398, 9140, 12796, 15995, 31990, 63980]

約数ペア:

[(1, 63980), (2, 31990), (4, 15995), (5, 12796), (7, 9140), (10, 6398), (14, 4570), (20, 3199), (28, 2285), (35, 1828), (70, 914), (140, 457)]