21700355

素因数分解:

$5^1\times {\mathrm{97}}^1\times {\mathrm{101}}^1\times {\mathrm{443}}^1$

素因数の和:646

約数の個数: 16

約数和(自身を含む): 26629344

約数和(自身を除く): 4928989

約数列:

[1, 5, 97, 101, 443, 485, 505, 2215, 9797, 42971, 44743, 48985, 214855, 223715, 4340071, 21700355]

約数ペア:

[(1, 21700355), (5, 4340071), (97, 223715), (101, 214855), (443, 48985), (485, 44743), (505, 42971), (2215, 9797)]