21216320

素因数分解:

$2^6\times 5^1\times {\mathrm{66301}}^1$

素因数の和:66318

約数の個数: 28

約数和(自身を含む): 50522124

約数和(自身を除く): 29305804

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 160, 320, 66301, 132602, 265204, 331505, 530408, 663010, 1060816, 1326020, 2121632, 2652040, 4243264, 5304080, 10608160, 21216320]

約数ペア:

[(1, 21216320), (2, 10608160), (4, 5304080), (5, 4243264), (8, 2652040), (10, 2121632), (16, 1326020), (20, 1060816), (32, 663010), (40, 530408), (64, 331505), (80, 265204), (160, 132602), (320, 66301)]