21089210

素因数分解:

$2^1\times 5^1\times {\mathrm{1301}}^1\times {\mathrm{1621}}^1$

素因数の和:2929

約数の個数: 16

約数和(自身を含む): 38013192

約数和(自身を除く): 16923982

約数列:

[1, 2, 5, 10, 1301, 1621, 2602, 3242, 6505, 8105, 13010, 16210, 2108921, 4217842, 10544605, 21089210]

約数ペア:

[(1, 21089210), (2, 10544605), (5, 4217842), (10, 2108921), (1301, 16210), (1621, 13010), (2602, 8105), (3242, 6505)]