19755280

素因数分解:

$2^4\times 5^1\times {\mathrm{246941}}^1$

素因数の和:246954

約数の個数: 20

約数和(自身を含む): 45931212

約数和(自身を除く): 26175932

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 246941, 493882, 987764, 1234705, 1975528, 2469410, 3951056, 4938820, 9877640, 19755280]

約数ペア:

[(1, 19755280), (2, 9877640), (4, 4938820), (5, 3951056), (8, 2469410), (10, 1975528), (16, 1234705), (20, 987764), (40, 493882), (80, 246941)]