420502750

素因数分解:

$2^1\times 5^3\times {\mathrm{89}}^1\times {\mathrm{18899}}^1$

素因数の和:19005

約数の個数: 32

約数和(自身を含む): 796068000

約数和(自身を除く): 375565250

約数列:

[1, 2, 5, 10, 25, 50, 89, 125, 178, 250, 445, 890, 2225, 4450, 11125, 18899, 22250, 37798, 94495, 188990, 472475, 944950, 1682011, 2362375, 3364022, 4724750, 8410055, 16820110, 42050275, 84100550, 210251375, 420502750]

約数ペア:

[(1, 420502750), (2, 210251375), (5, 84100550), (10, 42050275), (25, 16820110), (50, 8410055), (89, 4724750), (125, 3364022), (178, 2362375), (250, 1682011), (445, 944950), (890, 472475), (2225, 188990), (4450, 94495), (11125, 37798), (18899, 22250)]