20175856840

素因数分解:

$2^3\times 5^1\times {\mathrm{2543}}^1\times {\mathrm{198347}}^1$

素因数の和:200901

約数の個数: 32

約数和(自身を含む): 45413758080

約数和(自身を除く): 25237901240

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 2543, 5086, 10172, 12715, 20344, 25430, 50860, 101720, 198347, 396694, 793388, 991735, 1586776, 1983470, 3966940, 7933880, 504396421, 1008792842, 2017585684, 2521982105, 4035171368, 5043964210, 10087928420, 20175856840]

約数ペア:

[(1, 20175856840), (2, 10087928420), (4, 5043964210), (5, 4035171368), (8, 2521982105), (10, 2017585684), (20, 1008792842), (40, 504396421), (2543, 7933880), (5086, 3966940), (10172, 1983470), (12715, 1586776), (20344, 991735), (25430, 793388), (50860, 396694), (101720, 198347)]