256338978

素因数分解:

$2^1\times 3^1\times 7^1\times {\mathrm{331}}^1\times {\mathrm{18439}}^1$

素因数の和:18782

約数の個数: 32

約数和(自身を含む): 587719680

約数和(自身を除く): 331380702

約数列:

[1, 2, 3, 6, 7, 14, 21, 42, 331, 662, 993, 1986, 2317, 4634, 6951, 13902, 18439, 36878, 55317, 110634, 129073, 258146, 387219, 774438, 6103309, 12206618, 18309927, 36619854, 42723163, 85446326, 128169489, 256338978]

約数ペア:

[(1, 256338978), (2, 128169489), (3, 85446326), (6, 42723163), (7, 36619854), (14, 18309927), (21, 12206618), (42, 6103309), (331, 774438), (662, 387219), (993, 258146), (1986, 129073), (2317, 110634), (4634, 55317), (6951, 36878), (13902, 18439)]