219955760

素因数分解:

$2^4\times 5^1\times {\mathrm{2749447}}^1$

素因数の和:2749460

約数の個数: 20

約数和(自身を含む): 511397328

約数和(自身を除く): 291441568

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 2749447, 5498894, 10997788, 13747235, 21995576, 27494470, 43991152, 54988940, 109977880, 219955760]

約数ペア:

[(1, 219955760), (2, 109977880), (4, 54988940), (5, 43991152), (8, 27494470), (10, 21995576), (16, 13747235), (20, 10997788), (40, 5498894), (80, 2749447)]