21539908

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{467}}^1\times {\mathrm{887}}^1$

素因数の和:1371

約数の個数: 24

約数和(自身を含む): 40727232

約数和(自身を除く): 19187324

約数列:

[1, 2, 4, 13, 26, 52, 467, 887, 934, 1774, 1868, 3548, 6071, 11531, 12142, 23062, 24284, 46124, 414229, 828458, 1656916, 5384977, 10769954, 21539908]

約数ペア:

[(1, 21539908), (2, 10769954), (4, 5384977), (13, 1656916), (26, 828458), (52, 414229), (467, 46124), (887, 24284), (934, 23062), (1774, 12142), (1868, 11531), (3548, 6071)]