20195440

素因数分解:

$2^4\times 5^1\times {\mathrm{252443}}^1$

素因数の和:252456

約数の個数: 20

約数和(自身を含む): 46954584

約数和(自身を除く): 26759144

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 252443, 504886, 1009772, 1262215, 2019544, 2524430, 4039088, 5048860, 10097720, 20195440]

約数ペア:

[(1, 20195440), (2, 10097720), (4, 5048860), (5, 4039088), (8, 2524430), (10, 2019544), (16, 1262215), (20, 1009772), (40, 504886), (80, 252443)]