80912680

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{103}}^1\times {\mathrm{479}}^1$

素因数の和:634

約数の個数: 64

約数和(自身を含む): 188697600

約数和(自身を除く): 107784920

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 82, 103, 164, 205, 206, 328, 410, 412, 479, 515, 820, 824, 958, 1030, 1640, 1916, 2060, 2395, 3832, 4120, 4223, 4790, 8446, 9580, 16892, 19160, 19639, 21115, 33784, 39278, 42230, 49337, 78556, 84460, 98195, 98674, 157112, 168920, 196390, 197348, 246685, 392780, 394696, 493370, 785560, 986740, 1973480, 2022817, 4045634, 8091268, 10114085, 16182536, 20228170, 40456340, 80912680]

約数ペア:

[(1, 80912680), (2, 40456340), (4, 20228170), (5, 16182536), (8, 10114085), (10, 8091268), (20, 4045634), (40, 2022817), (41, 1973480), (82, 986740), (103, 785560), (164, 493370), (205, 394696), (206, 392780), (328, 246685), (410, 197348), (412, 196390), (479, 168920), (515, 157112), (820, 98674), (824, 98195), (958, 84460), (1030, 78556), (1640, 49337), (1916, 42230), (2060, 39278), (2395, 33784), (3832, 21115), (4120, 19639), (4223, 19160), (4790, 16892), (8446, 9580)]