21858213

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{137}}^1\times {\mathrm{4091}}^1$

素因数の和:4244

約数の個数: 16

約数和(自身を含む): 31622976

約数和(自身を除く): 9764763

約数列:

[1, 3, 13, 39, 137, 411, 1781, 4091, 5343, 12273, 53183, 159549, 560467, 1681401, 7286071, 21858213]

約数ペア:

[(1, 21858213), (3, 7286071), (13, 1681401), (39, 560467), (137, 159549), (411, 53183), (1781, 12273), (4091, 5343)]