19631120

素因数分解:

$2^4\times 5^1\times {\mathrm{245389}}^1$

素因数の和:245402

約数の個数: 20

約数和(自身を含む): 45642540

約数和(自身を除く): 26011420

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 245389, 490778, 981556, 1226945, 1963112, 2453890, 3926224, 4907780, 9815560, 19631120]

約数ペア:

[(1, 19631120), (2, 9815560), (4, 4907780), (5, 3926224), (8, 2453890), (10, 1963112), (16, 1226945), (20, 981556), (40, 490778), (80, 245389)]