198710840

素因数分解:

$2^3\times 5^1\times {\mathrm{223}}^1\times {\mathrm{22277}}^1$

素因数の和:22511

約数の個数: 32

約数和(自身を含む): 449124480

約数和(自身を除く): 250413640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 223, 446, 892, 1115, 1784, 2230, 4460, 8920, 22277, 44554, 89108, 111385, 178216, 222770, 445540, 891080, 4967771, 9935542, 19871084, 24838855, 39742168, 49677710, 99355420, 198710840]

約数ペア:

[(1, 198710840), (2, 99355420), (4, 49677710), (5, 39742168), (8, 24838855), (10, 19871084), (20, 9935542), (40, 4967771), (223, 891080), (446, 445540), (892, 222770), (1115, 178216), (1784, 111385), (2230, 89108), (4460, 44554), (8920, 22277)]