21612395

素因数分解:

$5^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{107}}^1\times {\mathrm{199}}^1$

素因数の和:347

約数の個数: 32

約数和(自身を含む): 31104000

約数和(自身を除く): 9491605

約数列:

[1, 5, 7, 29, 35, 107, 145, 199, 203, 535, 749, 995, 1015, 1393, 3103, 3745, 5771, 6965, 15515, 21293, 21721, 28855, 40397, 106465, 108605, 149051, 201985, 617497, 745255, 3087485, 4322479, 21612395]

約数ペア:

[(1, 21612395), (5, 4322479), (7, 3087485), (29, 745255), (35, 617497), (107, 201985), (145, 149051), (199, 108605), (203, 106465), (535, 40397), (749, 28855), (995, 21721), (1015, 21293), (1393, 15515), (3103, 6965), (3745, 5771)]