77931280

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{317}}^1\times {\mathrm{439}}^1$

素因数の和:776

約数の個数: 80

約数和(自身を含む): 208200960

約数和(自身を除く): 130269680

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 140, 280, 317, 439, 560, 634, 878, 1268, 1585, 1756, 2195, 2219, 2536, 3073, 3170, 3512, 4390, 4438, 5072, 6146, 6340, 7024, 8780, 8876, 11095, 12292, 12680, 15365, 17560, 17752, 22190, 24584, 25360, 30730, 35120, 35504, 44380, 49168, 61460, 88760, 122920, 139163, 177520, 245840, 278326, 556652, 695815, 974141, 1113304, 1391630, 1948282, 2226608, 2783260, 3896564, 4870705, 5566520, 7793128, 9741410, 11133040, 15586256, 19482820, 38965640, 77931280]

約数ペア:

[(1, 77931280), (2, 38965640), (4, 19482820), (5, 15586256), (7, 11133040), (8, 9741410), (10, 7793128), (14, 5566520), (16, 4870705), (20, 3896564), (28, 2783260), (35, 2226608), (40, 1948282), (56, 1391630), (70, 1113304), (80, 974141), (112, 695815), (140, 556652), (280, 278326), (317, 245840), (439, 177520), (560, 139163), (634, 122920), (878, 88760), (1268, 61460), (1585, 49168), (1756, 44380), (2195, 35504), (2219, 35120), (2536, 30730), (3073, 25360), (3170, 24584), (3512, 22190), (4390, 17752), (4438, 17560), (5072, 15365), (6146, 12680), (6340, 12292), (7024, 11095), (8780, 8876)]