21648280

素因数分解:

$2^3\times 5^1\times {\mathrm{59}}^1\times {\mathrm{9173}}^1$

素因数の和:9243

約数の個数: 32

約数和(自身を含む): 49539600

約数和(自身を除く): 27891320

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 59, 118, 236, 295, 472, 590, 1180, 2360, 9173, 18346, 36692, 45865, 73384, 91730, 183460, 366920, 541207, 1082414, 2164828, 2706035, 4329656, 5412070, 10824140, 21648280]

約数ペア:

[(1, 21648280), (2, 10824140), (4, 5412070), (5, 4329656), (8, 2706035), (10, 2164828), (20, 1082414), (40, 541207), (59, 366920), (118, 183460), (236, 91730), (295, 73384), (472, 45865), (590, 36692), (1180, 18346), (2360, 9173)]