21399176

素因数分解:

$2^3\times {\mathrm{31}}^1\times {\mathrm{86287}}^1$

素因数の和:86324

約数の個数: 16

約数和(自身を含む): 41418240

約数和(自身を除く): 20019064

約数列:

[1, 2, 4, 8, 31, 62, 124, 248, 86287, 172574, 345148, 690296, 2674897, 5349794, 10699588, 21399176]

約数ペア:

[(1, 21399176), (2, 10699588), (4, 5349794), (8, 2674897), (31, 690296), (62, 345148), (124, 172574), (248, 86287)]