20938216

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{201329}}^1$

素因数の和:201348

約数の個数: 16

約数和(自身を含む): 42279300

約数和(自身を除く): 21341084

約数列:

[1, 2, 4, 8, 13, 26, 52, 104, 201329, 402658, 805316, 1610632, 2617277, 5234554, 10469108, 20938216]

約数ペア:

[(1, 20938216), (2, 10469108), (4, 5234554), (8, 2617277), (13, 1610632), (26, 805316), (52, 402658), (104, 201329)]