31811390

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{244703}}^1$

素因数の和:244723

約数の個数: 16

約数和(自身を含む): 61665408

約数和(自身を除く): 29854018

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 244703, 489406, 1223515, 2447030, 3181139, 6362278, 15905695, 31811390]

約数ペア:

[(1, 31811390), (2, 15905695), (5, 6362278), (10, 3181139), (13, 2447030), (26, 1223515), (65, 489406), (130, 244703)]