855220

素因数分解:

$2^2\times 5^1\times {\mathrm{61}}^1\times {\mathrm{701}}^1$

素因数の和:771

約数の個数: 24

約数和(自身を含む): 1828008

約数和(自身を除く): 972788

約数列:

[1, 2, 4, 5, 10, 20, 61, 122, 244, 305, 610, 701, 1220, 1402, 2804, 3505, 7010, 14020, 42761, 85522, 171044, 213805, 427610, 855220]

約数ペア:

[(1, 855220), (2, 427610), (4, 213805), (5, 171044), (10, 85522), (20, 42761), (61, 14020), (122, 7010), (244, 3505), (305, 2804), (610, 1402), (701, 1220)]