21420154

素因数分解:

$2^1\times 7^2\times {\mathrm{29}}^1\times {\mathrm{7537}}^1$

素因数の和:7582

約数の個数: 24

約数和(自身を含む): 38669940

約数和(自身を除く): 17249786

約数列:

[1, 2, 7, 14, 29, 49, 58, 98, 203, 406, 1421, 2842, 7537, 15074, 52759, 105518, 218573, 369313, 437146, 738626, 1530011, 3060022, 10710077, 21420154]

約数ペア:

[(1, 21420154), (2, 10710077), (7, 3060022), (14, 1530011), (29, 738626), (49, 437146), (58, 369313), (98, 218573), (203, 105518), (406, 52759), (1421, 15074), (2842, 7537)]