80812025

素因数分解:

$5^2\times 7^2\times {\mathrm{41}}^1\times {\mathrm{1609}}^1$

素因数の和:1674

約数の個数: 36

約数和(自身を含む): 119484540

約数和(自身を除く): 38672515

約数列:

[1, 5, 7, 25, 35, 41, 49, 175, 205, 245, 287, 1025, 1225, 1435, 1609, 2009, 7175, 8045, 10045, 11263, 40225, 50225, 56315, 65969, 78841, 281575, 329845, 394205, 461783, 1649225, 1971025, 2308915, 3232481, 11544575, 16162405, 80812025]

約数ペア:

[(1, 80812025), (5, 16162405), (7, 11544575), (25, 3232481), (35, 2308915), (41, 1971025), (49, 1649225), (175, 461783), (205, 394205), (245, 329845), (287, 281575), (1025, 78841), (1225, 65969), (1435, 56315), (1609, 50225), (2009, 40225), (7175, 11263), (8045, 10045)]