21388468

素因数分解:

$2^2\times {\mathrm{53}}^1\times {\mathrm{233}}^1\times {\mathrm{433}}^1$

素因数の和:723

約数の個数: 24

約数和(自身を含む): 38388168

約数和(自身を除く): 16999700

約数列:

[1, 2, 4, 53, 106, 212, 233, 433, 466, 866, 932, 1732, 12349, 22949, 24698, 45898, 49396, 91796, 100889, 201778, 403556, 5347117, 10694234, 21388468]

約数ペア:

[(1, 21388468), (2, 10694234), (4, 5347117), (53, 403556), (106, 201778), (212, 100889), (233, 91796), (433, 49396), (466, 45898), (866, 24698), (932, 22949), (1732, 12349)]