19768120

素因数分解:

$2^3\times 5^1\times {\mathrm{317}}^1\times {\mathrm{1559}}^1$

素因数の和:1887

約数の個数: 32

約数和(自身を含む): 44647200

約数和(自身を除く): 24879080

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 317, 634, 1268, 1559, 1585, 2536, 3118, 3170, 6236, 6340, 7795, 12472, 12680, 15590, 31180, 62360, 494203, 988406, 1976812, 2471015, 3953624, 4942030, 9884060, 19768120]

約数ペア:

[(1, 19768120), (2, 9884060), (4, 4942030), (5, 3953624), (8, 2471015), (10, 1976812), (20, 988406), (40, 494203), (317, 62360), (634, 31180), (1268, 15590), (1559, 12680), (1585, 12472), (2536, 7795), (3118, 6340), (3170, 6236)]