21790426

素因数分解:

$2^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{191}}^1\times {\mathrm{281}}^1$

素因数の和:510

約数の個数: 32

約数和(自身を含む): 38983680

約数和(自身を除く): 17193254

約数列:

[1, 2, 7, 14, 29, 58, 191, 203, 281, 382, 406, 562, 1337, 1967, 2674, 3934, 5539, 8149, 11078, 16298, 38773, 53671, 57043, 77546, 107342, 114086, 375697, 751394, 1556459, 3112918, 10895213, 21790426]

約数ペア:

[(1, 21790426), (2, 10895213), (7, 3112918), (14, 1556459), (29, 751394), (58, 375697), (191, 114086), (203, 107342), (281, 77546), (382, 57043), (406, 53671), (562, 38773), (1337, 16298), (1967, 11078), (2674, 8149), (3934, 5539)]