21120152

素因数分解:

$2^3\times {\mathrm{61}}^1\times {\mathrm{113}}^1\times {\mathrm{383}}^1$

素因数の和:563

約数の個数: 32

約数和(自身を含む): 40711680

約数和(自身を除く): 19591528

約数列:

[1, 2, 4, 8, 61, 113, 122, 226, 244, 383, 452, 488, 766, 904, 1532, 3064, 6893, 13786, 23363, 27572, 43279, 46726, 55144, 86558, 93452, 173116, 186904, 346232, 2640019, 5280038, 10560076, 21120152]

約数ペア:

[(1, 21120152), (2, 10560076), (4, 5280038), (8, 2640019), (61, 346232), (113, 186904), (122, 173116), (226, 93452), (244, 86558), (383, 55144), (452, 46726), (488, 43279), (766, 27572), (904, 23363), (1532, 13786), (3064, 6893)]