172912420

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{278891}}^1$

素因数の和:278931

約数の個数: 24

約数和(自身を含む): 374830848

約数和(自身を除く): 201918428

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 310, 620, 278891, 557782, 1115564, 1394455, 2788910, 5577820, 8645621, 17291242, 34582484, 43228105, 86456210, 172912420]

約数ペア:

[(1, 172912420), (2, 86456210), (4, 43228105), (5, 34582484), (10, 17291242), (20, 8645621), (31, 5577820), (62, 2788910), (124, 1394455), (155, 1115564), (310, 557782), (620, 278891)]