21251945

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{29723}}^1$

素因数の和:29752

約数の個数: 16

約数和(自身を含む): 29961792

約数和(自身を除く): 8709847

約数列:

[1, 5, 11, 13, 55, 65, 143, 715, 29723, 148615, 326953, 386399, 1634765, 1931995, 4250389, 21251945]

約数ペア:

[(1, 21251945), (5, 4250389), (11, 1931995), (13, 1634765), (55, 386399), (65, 326953), (143, 148615), (715, 29723)]