21138232

素因数分解:

$2^3\times {\mathrm{67}}^1\times {\mathrm{113}}^1\times {\mathrm{349}}^1$

素因数の和:535

約数の個数: 32

約数和(自身を含む): 40698000

約数和(自身を除く): 19559768

約数列:

[1, 2, 4, 8, 67, 113, 134, 226, 268, 349, 452, 536, 698, 904, 1396, 2792, 7571, 15142, 23383, 30284, 39437, 46766, 60568, 78874, 93532, 157748, 187064, 315496, 2642279, 5284558, 10569116, 21138232]

約数ペア:

[(1, 21138232), (2, 10569116), (4, 5284558), (8, 2642279), (67, 315496), (113, 187064), (134, 157748), (226, 93532), (268, 78874), (349, 60568), (452, 46766), (536, 39437), (698, 30284), (904, 23383), (1396, 15142), (2792, 7571)]