21958196

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{181}}^1\times {\mathrm{2333}}^1$

素因数の和:2531

約数の個数: 24

約数和(自身を含む): 41629224

約数和(自身を除く): 19671028

約数列:

[1, 2, 4, 13, 26, 52, 181, 362, 724, 2333, 2353, 4666, 4706, 9332, 9412, 30329, 60658, 121316, 422273, 844546, 1689092, 5489549, 10979098, 21958196]

約数ペア:

[(1, 21958196), (2, 10979098), (4, 5489549), (13, 1689092), (26, 844546), (52, 422273), (181, 121316), (362, 60658), (724, 30329), (2333, 9412), (2353, 9332), (4666, 4706)]