20745868

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{36269}}^1$

素因数の和:36297

約数の個数: 24

約数和(自身を含む): 42653520

約数和(自身を除く): 21907652

約数列:

[1, 2, 4, 11, 13, 22, 26, 44, 52, 143, 286, 572, 36269, 72538, 145076, 398959, 471497, 797918, 942994, 1595836, 1885988, 5186467, 10372934, 20745868]

約数ペア:

[(1, 20745868), (2, 10372934), (4, 5186467), (11, 1885988), (13, 1595836), (22, 942994), (26, 797918), (44, 471497), (52, 398959), (143, 145076), (286, 72538), (572, 36269)]