21963890

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{107}}^1\times {\mathrm{1579}}^1$

素因数の和:1706

約数の個数: 32

約数和(自身を含む): 43001280

約数和(自身を除く): 21037390

約数列:

[1, 2, 5, 10, 13, 26, 65, 107, 130, 214, 535, 1070, 1391, 1579, 2782, 3158, 6955, 7895, 13910, 15790, 20527, 41054, 102635, 168953, 205270, 337906, 844765, 1689530, 2196389, 4392778, 10981945, 21963890]

約数ペア:

[(1, 21963890), (2, 10981945), (5, 4392778), (10, 2196389), (13, 1689530), (26, 844765), (65, 337906), (107, 205270), (130, 168953), (214, 102635), (535, 41054), (1070, 20527), (1391, 15790), (1579, 13910), (2782, 7895), (3158, 6955)]