21381296

素因数分解:

$2^4\times {\mathrm{101}}^2\times {\mathrm{131}}^1$

素因数の和:341

約数の個数: 30

約数和(自身を含む): 42159876

約数和(自身を除く): 20778580

約数列:

[1, 2, 4, 8, 16, 101, 131, 202, 262, 404, 524, 808, 1048, 1616, 2096, 10201, 13231, 20402, 26462, 40804, 52924, 81608, 105848, 163216, 211696, 1336331, 2672662, 5345324, 10690648, 21381296]

約数ペア:

[(1, 21381296), (2, 10690648), (4, 5345324), (8, 2672662), (16, 1336331), (101, 211696), (131, 163216), (202, 105848), (262, 81608), (404, 52924), (524, 40804), (808, 26462), (1048, 20402), (1616, 13231), (2096, 10201)]