20491440

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{85381}}^1$

素因数の和:85397

約数の個数: 40

約数和(自身を含む): 63524208

約数和(自身を除く): 43032768

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 48, 60, 80, 120, 240, 85381, 170762, 256143, 341524, 426905, 512286, 683048, 853810, 1024572, 1280715, 1366096, 1707620, 2049144, 2561430, 3415240, 4098288, 5122860, 6830480, 10245720, 20491440]

約数ペア:

[(1, 20491440), (2, 10245720), (3, 6830480), (4, 5122860), (5, 4098288), (6, 3415240), (8, 2561430), (10, 2049144), (12, 1707620), (15, 1366096), (16, 1280715), (20, 1024572), (24, 853810), (30, 683048), (40, 512286), (48, 426905), (60, 341524), (80, 256143), (120, 170762), (240, 85381)]