21263268

素因数分解:

$2^2\times 3^1\times {\mathrm{13}}^1\times {\mathrm{136303}}^1$

素因数の和:136323

約数の個数: 24

約数和(自身を含む): 53431168

約数和(自身を除く): 32167900

約数列:

[1, 2, 3, 4, 6, 12, 13, 26, 39, 52, 78, 156, 136303, 272606, 408909, 545212, 817818, 1635636, 1771939, 3543878, 5315817, 7087756, 10631634, 21263268]

約数ペア:

[(1, 21263268), (2, 10631634), (3, 7087756), (4, 5315817), (6, 3543878), (12, 1771939), (13, 1635636), (26, 817818), (39, 545212), (52, 408909), (78, 272606), (156, 136303)]