21154408

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{421}}^1\times {\mathrm{571}}^1$

素因数の和:1009

約数の個数: 32

約数和(自身を含む): 43449120

約数和(自身を除く): 22294712

約数列:

[1, 2, 4, 8, 11, 22, 44, 88, 421, 571, 842, 1142, 1684, 2284, 3368, 4568, 4631, 6281, 9262, 12562, 18524, 25124, 37048, 50248, 240391, 480782, 961564, 1923128, 2644301, 5288602, 10577204, 21154408]

約数ペア:

[(1, 21154408), (2, 10577204), (4, 5288602), (8, 2644301), (11, 1923128), (22, 961564), (44, 480782), (88, 240391), (421, 50248), (571, 37048), (842, 25124), (1142, 18524), (1684, 12562), (2284, 9262), (3368, 6281), (4568, 4631)]