198585640

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{451331}}^1$

素因数の和:451353

約数の個数: 32

約数和(自身を含む): 487438560

約数和(自身を除く): 288852920

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 220, 440, 451331, 902662, 1805324, 2256655, 3610648, 4513310, 4964641, 9026620, 9929282, 18053240, 19858564, 24823205, 39717128, 49646410, 99292820, 198585640]

約数ペア:

[(1, 198585640), (2, 99292820), (4, 49646410), (5, 39717128), (8, 24823205), (10, 19858564), (11, 18053240), (20, 9929282), (22, 9026620), (40, 4964641), (44, 4513310), (55, 3610648), (88, 2256655), (110, 1805324), (220, 902662), (440, 451331)]