20719985

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{28979}}^1$

素因数の和:29008

約数の個数: 16

約数和(自身を含む): 29211840

約数和(自身を除く): 8491855

約数列:

[1, 5, 11, 13, 55, 65, 143, 715, 28979, 144895, 318769, 376727, 1593845, 1883635, 4143997, 20719985]

約数ペア:

[(1, 20719985), (5, 4143997), (11, 1883635), (13, 1593845), (55, 376727), (65, 318769), (143, 144895), (715, 28979)]