21421436

素因数分解:

$2^2\times {\mathrm{19}}^1\times {\mathrm{521}}^1\times {\mathrm{541}}^1$

素因数の和:1085

約数の個数: 24

約数和(自身を含む): 39609360

約数和(自身を除く): 18187924

約数列:

[1, 2, 4, 19, 38, 76, 521, 541, 1042, 1082, 2084, 2164, 9899, 10279, 19798, 20558, 39596, 41116, 281861, 563722, 1127444, 5355359, 10710718, 21421436]

約数ペア:

[(1, 21421436), (2, 10710718), (4, 5355359), (19, 1127444), (38, 563722), (76, 281861), (521, 41116), (541, 39596), (1042, 20558), (1082, 19798), (2084, 10279), (2164, 9899)]