21863240

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{113}}^1\times {\mathrm{691}}^1$

素因数の和:822

約数の個数: 64

約数和(自身を含む): 56799360

約数和(自身を除く): 34936120

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 113, 140, 226, 280, 452, 565, 691, 791, 904, 1130, 1382, 1582, 2260, 2764, 3164, 3455, 3955, 4520, 4837, 5528, 6328, 6910, 7910, 9674, 13820, 15820, 19348, 24185, 27640, 31640, 38696, 48370, 78083, 96740, 156166, 193480, 312332, 390415, 546581, 624664, 780830, 1093162, 1561660, 2186324, 2732905, 3123320, 4372648, 5465810, 10931620, 21863240]

約数ペア:

[(1, 21863240), (2, 10931620), (4, 5465810), (5, 4372648), (7, 3123320), (8, 2732905), (10, 2186324), (14, 1561660), (20, 1093162), (28, 780830), (35, 624664), (40, 546581), (56, 390415), (70, 312332), (113, 193480), (140, 156166), (226, 96740), (280, 78083), (452, 48370), (565, 38696), (691, 31640), (791, 27640), (904, 24185), (1130, 19348), (1382, 15820), (1582, 13820), (2260, 9674), (2764, 7910), (3164, 6910), (3455, 6328), (3955, 5528), (4520, 4837)]