221390

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^2\times {\mathrm{131}}^1$

素因数の和:164

約数の個数: 24

約数和(自身を含む): 434808

約数和(自身を除く): 213418

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 131, 169, 262, 338, 655, 845, 1310, 1690, 1703, 3406, 8515, 17030, 22139, 44278, 110695, 221390]

約数ペア:

[(1, 221390), (2, 110695), (5, 44278), (10, 22139), (13, 17030), (26, 8515), (65, 3406), (130, 1703), (131, 1690), (169, 1310), (262, 845), (338, 655)]