20921210

素因数分解:

$2^1\times 5^1\times {\mathrm{241}}^1\times {\mathrm{8681}}^1$

素因数の和:8929

約数の個数: 16

約数和(自身を含む): 37818792

約数和(自身を除く): 16897582

約数列:

[1, 2, 5, 10, 241, 482, 1205, 2410, 8681, 17362, 43405, 86810, 2092121, 4184242, 10460605, 20921210]

約数ペア:

[(1, 20921210), (2, 10460605), (5, 4184242), (10, 2092121), (241, 86810), (482, 43405), (1205, 17362), (2410, 8681)]