21656848

素因数分解:

$2^4\times {\mathrm{31}}^1\times {\mathrm{47}}^1\times {\mathrm{929}}^1$

素因数の和:1015

約数の個数: 40

約数和(自身を含む): 44282880

約数和(自身を除く): 22626032

約数列:

[1, 2, 4, 8, 16, 31, 47, 62, 94, 124, 188, 248, 376, 496, 752, 929, 1457, 1858, 2914, 3716, 5828, 7432, 11656, 14864, 23312, 28799, 43663, 57598, 87326, 115196, 174652, 230392, 349304, 460784, 698608, 1353553, 2707106, 5414212, 10828424, 21656848]

約数ペア:

[(1, 21656848), (2, 10828424), (4, 5414212), (8, 2707106), (16, 1353553), (31, 698608), (47, 460784), (62, 349304), (94, 230392), (124, 174652), (188, 115196), (248, 87326), (376, 57598), (496, 43663), (752, 28799), (929, 23312), (1457, 14864), (1858, 11656), (2914, 7432), (3716, 5828)]