21818110

素因数分解:

$2^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{70381}}^1$

素因数の和:70419

約数の個数: 16

約数和(自身を含む): 40540032

約数和(自身を除く): 18721922

約数列:

[1, 2, 5, 10, 31, 62, 155, 310, 70381, 140762, 351905, 703810, 2181811, 4363622, 10909055, 21818110]

約数ペア:

[(1, 21818110), (2, 10909055), (5, 4363622), (10, 2181811), (31, 703810), (62, 351905), (155, 140762), (310, 70381)]