211564420

素因数分解:

$2^2\times 5^1\times {\mathrm{2111}}^1\times {\mathrm{5011}}^1$

素因数の和:7131

約数の個数: 24

約数和(自身を含む): 444584448

約数和(自身を除く): 233020028

約数列:

[1, 2, 4, 5, 10, 20, 2111, 4222, 5011, 8444, 10022, 10555, 20044, 21110, 25055, 42220, 50110, 100220, 10578221, 21156442, 42312884, 52891105, 105782210, 211564420]

約数ペア:

[(1, 211564420), (2, 105782210), (4, 52891105), (5, 42312884), (10, 21156442), (20, 10578221), (2111, 100220), (4222, 50110), (5011, 42220), (8444, 25055), (10022, 21110), (10555, 20044)]