66691960

素因数分解:

$2^3\times 5^1\times {\mathrm{643}}^1\times {\mathrm{2593}}^1$

素因数の和:3247

約数の個数: 32

約数和(自身を含む): 150348240

約数和(自身を除く): 83656280

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 643, 1286, 2572, 2593, 3215, 5144, 5186, 6430, 10372, 12860, 12965, 20744, 25720, 25930, 51860, 103720, 1667299, 3334598, 6669196, 8336495, 13338392, 16672990, 33345980, 66691960]

約数ペア:

[(1, 66691960), (2, 33345980), (4, 16672990), (5, 13338392), (8, 8336495), (10, 6669196), (20, 3334598), (40, 1667299), (643, 103720), (1286, 51860), (2572, 25930), (2593, 25720), (3215, 20744), (5144, 12965), (5186, 12860), (6430, 10372)]