20968885

素因数分解:

$5^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{73}}^1\times {\mathrm{283}}^1$

素因数の和:397

約数の個数: 32

約数和(自身を含む): 30263040

約数和(自身を除く): 9294155

約数列:

[1, 5, 7, 29, 35, 73, 145, 203, 283, 365, 511, 1015, 1415, 1981, 2117, 2555, 8207, 9905, 10585, 14819, 20659, 41035, 57449, 74095, 103295, 144613, 287245, 599111, 723065, 2995555, 4193777, 20968885]

約数ペア:

[(1, 20968885), (5, 4193777), (7, 2995555), (29, 723065), (35, 599111), (73, 287245), (145, 144613), (203, 103295), (283, 74095), (365, 57449), (511, 41035), (1015, 20659), (1415, 14819), (1981, 10585), (2117, 9905), (2555, 8207)]