19715120

素因数分解:

$2^4\times 5^1\times {\mathrm{246439}}^1$

素因数の和:246452

約数の個数: 20

約数和(自身を含む): 45837840

約数和(自身を除く): 26122720

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 246439, 492878, 985756, 1232195, 1971512, 2464390, 3943024, 4928780, 9857560, 19715120]

約数ペア:

[(1, 19715120), (2, 9857560), (4, 4928780), (5, 3943024), (8, 2464390), (10, 1971512), (16, 1232195), (20, 985756), (40, 492878), (80, 246439)]