21613790

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{8543}}^1$

素因数の和:8584

約数の個数: 32

約数和(自身を含む): 44292096

約数和(自身を除く): 22678306

約数列:

[1, 2, 5, 10, 11, 22, 23, 46, 55, 110, 115, 230, 253, 506, 1265, 2530, 8543, 17086, 42715, 85430, 93973, 187946, 196489, 392978, 469865, 939730, 982445, 1964890, 2161379, 4322758, 10806895, 21613790]

約数ペア:

[(1, 21613790), (2, 10806895), (5, 4322758), (10, 2161379), (11, 1964890), (22, 982445), (23, 939730), (46, 469865), (55, 392978), (110, 196489), (115, 187946), (230, 93973), (253, 85430), (506, 42715), (1265, 17086), (2530, 8543)]