413980

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{2957}}^1$

素因数の和:2973

約数の個数: 24

約数和(自身を含む): 993888

約数和(自身を除く): 579908

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 2957, 5914, 11828, 14785, 20699, 29570, 41398, 59140, 82796, 103495, 206990, 413980]

約数ペア:

[(1, 413980), (2, 206990), (4, 103495), (5, 82796), (7, 59140), (10, 41398), (14, 29570), (20, 20699), (28, 14785), (35, 11828), (70, 5914), (140, 2957)]