21418040

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{76493}}^1$

素因数の和:76511

約数の個数: 32

約数和(自身を含む): 55075680

約数和(自身を除く): 33657640

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 76493, 152986, 305972, 382465, 535451, 611944, 764930, 1070902, 1529860, 2141804, 2677255, 3059720, 4283608, 5354510, 10709020, 21418040]

約数ペア:

[(1, 21418040), (2, 10709020), (4, 5354510), (5, 4283608), (7, 3059720), (8, 2677255), (10, 2141804), (14, 1529860), (20, 1070902), (28, 764930), (35, 611944), (40, 535451), (56, 382465), (70, 305972), (140, 152986), (280, 76493)]