20158040

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{71993}}^1$

素因数の和:72011

約数の個数: 32

約数和(自身を含む): 51835680

約数和(自身を除く): 31677640

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 71993, 143986, 287972, 359965, 503951, 575944, 719930, 1007902, 1439860, 2015804, 2519755, 2879720, 4031608, 5039510, 10079020, 20158040]

約数ペア:

[(1, 20158040), (2, 10079020), (4, 5039510), (5, 4031608), (7, 2879720), (8, 2519755), (10, 2015804), (14, 1439860), (20, 1007902), (28, 719930), (35, 575944), (40, 503951), (56, 359965), (70, 287972), (140, 143986), (280, 71993)]