64984760

素因数分解:

$2^3\times 5^1\times {\mathrm{103}}^1\times {\mathrm{15773}}^1$

素因数の和:15887

約数の個数: 32

約数和(自身を含む): 147644640

約数和(自身を除く): 82659880

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 103, 206, 412, 515, 824, 1030, 2060, 4120, 15773, 31546, 63092, 78865, 126184, 157730, 315460, 630920, 1624619, 3249238, 6498476, 8123095, 12996952, 16246190, 32492380, 64984760]

約数ペア:

[(1, 64984760), (2, 32492380), (4, 16246190), (5, 12996952), (8, 8123095), (10, 6498476), (20, 3249238), (40, 1624619), (103, 630920), (206, 315460), (412, 157730), (515, 126184), (824, 78865), (1030, 63092), (2060, 31546), (4120, 15773)]