21880690

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{4549}}^1$

素因数の和:4606

約数の個数: 32

約数和(自身を含む): 43570800

約数和(自身を除く): 21690110

約数列:

[1, 2, 5, 10, 13, 26, 37, 65, 74, 130, 185, 370, 481, 962, 2405, 4549, 4810, 9098, 22745, 45490, 59137, 118274, 168313, 295685, 336626, 591370, 841565, 1683130, 2188069, 4376138, 10940345, 21880690]

約数ペア:

[(1, 21880690), (2, 10940345), (5, 4376138), (10, 2188069), (13, 1683130), (26, 841565), (37, 591370), (65, 336626), (74, 295685), (130, 168313), (185, 118274), (370, 59137), (481, 45490), (962, 22745), (2405, 9098), (4549, 4810)]