21302830

素因数分解:

$2^1\times 5^1\times {\mathrm{23}}^2\times {\mathrm{4027}}^1$

素因数の和:4080

約数の個数: 24

約数和(自身を含む): 40094712

約数和(自身を除く): 18791882

約数列:

[1, 2, 5, 10, 23, 46, 115, 230, 529, 1058, 2645, 4027, 5290, 8054, 20135, 40270, 92621, 185242, 463105, 926210, 2130283, 4260566, 10651415, 21302830]

約数ペア:

[(1, 21302830), (2, 10651415), (5, 4260566), (10, 2130283), (23, 926210), (46, 463105), (115, 185242), (230, 92621), (529, 40270), (1058, 20135), (2645, 8054), (4027, 5290)]