21885812

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{89}}^1\times {\mathrm{4729}}^1$

素因数の和:4835

約数の個数: 24

約数和(自身を含む): 41718600

約数和(自身を除く): 19832788

約数列:

[1, 2, 4, 13, 26, 52, 89, 178, 356, 1157, 2314, 4628, 4729, 9458, 18916, 61477, 122954, 245908, 420881, 841762, 1683524, 5471453, 10942906, 21885812]

約数ペア:

[(1, 21885812), (2, 10942906), (4, 5471453), (13, 1683524), (26, 841762), (52, 420881), (89, 245908), (178, 122954), (356, 61477), (1157, 18916), (2314, 9458), (4628, 4729)]