21180808

素因数分解:

$2^3\times {\mathrm{11}}^2\times {\mathrm{21881}}^1$

素因数の和:21909

約数の個数: 24

約数和(自身を含む): 43654590

約数和(自身を除く): 22473782

約数列:

[1, 2, 4, 8, 11, 22, 44, 88, 121, 242, 484, 968, 21881, 43762, 87524, 175048, 240691, 481382, 962764, 1925528, 2647601, 5295202, 10590404, 21180808]

約数ペア:

[(1, 21180808), (2, 10590404), (4, 5295202), (8, 2647601), (11, 1925528), (22, 962764), (44, 481382), (88, 240691), (121, 175048), (242, 87524), (484, 43762), (968, 21881)]