78564820

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{311}}^1\times {\mathrm{743}}^1$

素因数の和:1080

約数の個数: 48

約数和(自身を含む): 175488768

約数和(自身を除く): 96923948

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 170, 311, 340, 622, 743, 1244, 1486, 1555, 2972, 3110, 3715, 5287, 6220, 7430, 10574, 12631, 14860, 21148, 25262, 26435, 50524, 52870, 63155, 105740, 126310, 231073, 252620, 462146, 924292, 1155365, 2310730, 3928241, 4621460, 7856482, 15712964, 19641205, 39282410, 78564820]

約数ペア:

[(1, 78564820), (2, 39282410), (4, 19641205), (5, 15712964), (10, 7856482), (17, 4621460), (20, 3928241), (34, 2310730), (68, 1155365), (85, 924292), (170, 462146), (311, 252620), (340, 231073), (622, 126310), (743, 105740), (1244, 63155), (1486, 52870), (1555, 50524), (2972, 26435), (3110, 25262), (3715, 21148), (5287, 14860), (6220, 12631), (7430, 10574)]