21251529

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{67}}^1\times {\mathrm{2711}}^1$

素因数の和:2797

約数の個数: 24

約数和(自身を含む): 33563712

約数和(自身を除く): 12312183

約数列:

[1, 3, 9, 13, 39, 67, 117, 201, 603, 871, 2613, 2711, 7839, 8133, 24399, 35243, 105729, 181637, 317187, 544911, 1634733, 2361281, 7083843, 21251529]

約数ペア:

[(1, 21251529), (3, 7083843), (9, 2361281), (13, 1634733), (39, 544911), (67, 317187), (117, 181637), (201, 105729), (603, 35243), (871, 24399), (2613, 8133), (2711, 7839)]