2151820

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{9781}}^1$

素因数の和:9801

約数の個数: 24

約数和(自身を含む): 4930128

約数和(自身を除く): 2778308

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220, 9781, 19562, 39124, 48905, 97810, 107591, 195620, 215182, 430364, 537955, 1075910, 2151820]

約数ペア:

[(1, 2151820), (2, 1075910), (4, 537955), (5, 430364), (10, 215182), (11, 195620), (20, 107591), (22, 97810), (44, 48905), (55, 39124), (110, 19562), (220, 9781)]