21099953

素因数分解:

$7^1\times {\mathrm{37}}^1\times {\mathrm{41}}^1\times {\mathrm{1987}}^1$

素因数の和:2072

約数の個数: 16

約数和(自身を含む): 25382784

約数和(自身を除く): 4282831

約数列:

[1, 7, 37, 41, 259, 287, 1517, 1987, 10619, 13909, 73519, 81467, 514633, 570269, 3014279, 21099953]

約数ペア:

[(1, 21099953), (7, 3014279), (37, 570269), (41, 514633), (259, 81467), (287, 73519), (1517, 13909), (1987, 10619)]