21574551

素因数分解:

$3^1\times {\mathrm{47}}^1\times {\mathrm{53}}^1\times {\mathrm{2887}}^1$

素因数の和:2990

約数の個数: 16

約数和(自身を含む): 29942784

約数和(自身を除く): 8368233

約数列:

[1, 3, 47, 53, 141, 159, 2491, 2887, 7473, 8661, 135689, 153011, 407067, 459033, 7191517, 21574551]

約数ペア:

[(1, 21574551), (3, 7191517), (47, 459033), (53, 407067), (141, 153011), (159, 135689), (2491, 8661), (2887, 7473)]