8140420

素因数分解:

$2^2\times 5^1\times {\mathrm{191}}^1\times {\mathrm{2131}}^1$

素因数の和:2331

約数の個数: 24

約数和(自身を含む): 17192448

約数和(自身を除く): 9052028

約数列:

[1, 2, 4, 5, 10, 20, 191, 382, 764, 955, 1910, 2131, 3820, 4262, 8524, 10655, 21310, 42620, 407021, 814042, 1628084, 2035105, 4070210, 8140420]

約数ペア:

[(1, 8140420), (2, 4070210), (4, 2035105), (5, 1628084), (10, 814042), (20, 407021), (191, 42620), (382, 21310), (764, 10655), (955, 8524), (1910, 4262), (2131, 3820)]