21777130

素因数分解:

$2^1\times 5^1\times {\mathrm{139}}^1\times {\mathrm{15667}}^1$

素因数の和:15813

約数の個数: 16

約数和(自身を含む): 39483360

約数和(自身を除く): 17706230

約数列:

[1, 2, 5, 10, 139, 278, 695, 1390, 15667, 31334, 78335, 156670, 2177713, 4355426, 10888565, 21777130]

約数ペア:

[(1, 21777130), (2, 10888565), (5, 4355426), (10, 2177713), (139, 156670), (278, 78335), (695, 31334), (1390, 15667)]