21360031

素因数分解:

$7^2\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{1723}}^1$

素因数の和:1771

約数の個数: 24

約数和(自身を含む): 28301184

約数和(自身を除く): 6941153

約数列:

[1, 7, 11, 23, 49, 77, 161, 253, 539, 1127, 1723, 1771, 12061, 12397, 18953, 39629, 84427, 132671, 277403, 435919, 928697, 1941821, 3051433, 21360031]

約数ペア:

[(1, 21360031), (7, 3051433), (11, 1941821), (23, 928697), (49, 435919), (77, 277403), (161, 132671), (253, 84427), (539, 39629), (1127, 18953), (1723, 12397), (1771, 12061)]