199609840

素因数分解:

$2^4\times 5^1\times {\mathrm{2495123}}^1$

素因数の和:2495136

約数の個数: 20

約数和(自身を含む): 464093064

約数和(自身を除く): 264483224

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 2495123, 4990246, 9980492, 12475615, 19960984, 24951230, 39921968, 49902460, 99804920, 199609840]

約数ペア:

[(1, 199609840), (2, 99804920), (4, 49902460), (5, 39921968), (8, 24951230), (10, 19960984), (16, 12475615), (20, 9980492), (40, 4990246), (80, 2495123)]