21308870

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{307}}^1\times {\mathrm{631}}^1$

素因数の和:956

約数の個数: 32

約数和(自身を含む): 42045696

約数和(自身を除く): 20736826

約数列:

[1, 2, 5, 10, 11, 22, 55, 110, 307, 614, 631, 1262, 1535, 3070, 3155, 3377, 6310, 6754, 6941, 13882, 16885, 33770, 34705, 69410, 193717, 387434, 968585, 1937170, 2130887, 4261774, 10654435, 21308870]

約数ペア:

[(1, 21308870), (2, 10654435), (5, 4261774), (10, 2130887), (11, 1937170), (22, 968585), (55, 387434), (110, 193717), (307, 69410), (614, 34705), (631, 33770), (1262, 16885), (1535, 13882), (3070, 6941), (3155, 6754), (3377, 6310)]