221510840

素因数分解:

$2^3\times 5^1\times {\mathrm{5537771}}^1$

素因数の和:5537782

約数の個数: 16

約数和(自身を含む): 498399480

約数和(自身を除く): 276888640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 5537771, 11075542, 22151084, 27688855, 44302168, 55377710, 110755420, 221510840]

約数ペア:

[(1, 221510840), (2, 110755420), (4, 55377710), (5, 44302168), (8, 27688855), (10, 22151084), (20, 11075542), (40, 5537771)]