19958110

素因数分解:

$2^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{64381}}^1$

素因数の和:64419

約数の個数: 16

約数和(自身を含む): 37084032

約数和(自身を除く): 17125922

約数列:

[1, 2, 5, 10, 31, 62, 155, 310, 64381, 128762, 321905, 643810, 1995811, 3991622, 9979055, 19958110]

約数ペア:

[(1, 19958110), (2, 9979055), (5, 3991622), (10, 1995811), (31, 643810), (62, 321905), (155, 128762), (310, 64381)]