20428265

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{28571}}^1$

素因数の和:28600

約数の個数: 16

約数和(自身を含む): 28800576

約数和(自身を除く): 8372311

約数列:

[1, 5, 11, 13, 55, 65, 143, 715, 28571, 142855, 314281, 371423, 1571405, 1857115, 4085653, 20428265]

約数ペア:

[(1, 20428265), (5, 4085653), (11, 1857115), (13, 1571405), (55, 371423), (65, 314281), (143, 142855), (715, 28571)]