21478702

素因数分解:

$2^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{80747}}^1$

素因数の和:80775

約数の個数: 16

約数和(自身を含む): 38759040

約数和(自身を除く): 17280338

約数列:

[1, 2, 7, 14, 19, 38, 133, 266, 80747, 161494, 565229, 1130458, 1534193, 3068386, 10739351, 21478702]

約数ペア:

[(1, 21478702), (2, 10739351), (7, 3068386), (14, 1534193), (19, 1130458), (38, 565229), (133, 161494), (266, 80747)]