20919110

素因数分解:

$2^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{67481}}^1$

素因数の和:67519

約数の個数: 16

約数和(自身を含む): 38869632

約数和(自身を除く): 17950522

約数列:

[1, 2, 5, 10, 31, 62, 155, 310, 67481, 134962, 337405, 674810, 2091911, 4183822, 10459555, 20919110]

約数ペア:

[(1, 20919110), (2, 10459555), (5, 4183822), (10, 2091911), (31, 674810), (62, 337405), (155, 134962), (310, 67481)]