20684020

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{147743}}^1$

素因数の和:147759

約数の個数: 24

約数和(自身を含む): 49641984

約数和(自身を除く): 28957964

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 147743, 295486, 590972, 738715, 1034201, 1477430, 2068402, 2954860, 4136804, 5171005, 10342010, 20684020]

約数ペア:

[(1, 20684020), (2, 10342010), (4, 5171005), (5, 4136804), (7, 2954860), (10, 2068402), (14, 1477430), (20, 1034201), (28, 738715), (35, 590972), (70, 295486), (140, 147743)]