21928975

素因数分解:

$5^2\times {\mathrm{37}}^1\times {\mathrm{151}}^1\times {\mathrm{157}}^1$

素因数の和:355

約数の個数: 24

約数和(自身を含む): 28290848

約数和(自身を除く): 6361873

約数列:

[1, 5, 25, 37, 151, 157, 185, 755, 785, 925, 3775, 3925, 5587, 5809, 23707, 27935, 29045, 118535, 139675, 145225, 592675, 877159, 4385795, 21928975]

約数ペア:

[(1, 21928975), (5, 4385795), (25, 877159), (37, 592675), (151, 145225), (157, 139675), (185, 118535), (755, 29045), (785, 27935), (925, 23707), (3775, 5809), (3925, 5587)]