21121916

素因数分解:

$2^2\times {\mathrm{131}}^1\times {\mathrm{173}}^1\times {\mathrm{233}}^1$

素因数の和:541

約数の個数: 24

約数和(自身を含む): 37621584

約数和(自身を除く): 16499668

約数列:

[1, 2, 4, 131, 173, 233, 262, 346, 466, 524, 692, 932, 22663, 30523, 40309, 45326, 61046, 80618, 90652, 122092, 161236, 5280479, 10560958, 21121916]

約数ペア:

[(1, 21121916), (2, 10560958), (4, 5280479), (131, 161236), (173, 122092), (233, 90652), (262, 80618), (346, 61046), (466, 45326), (524, 40309), (692, 30523), (932, 22663)]