19561936

素因数分解:

$2^4\times {\mathrm{251}}^1\times {\mathrm{4871}}^1$

素因数の和:5130

約数の個数: 20

約数和(自身を含む): 38060064

約数和(自身を除く): 18498128

約数列:

[1, 2, 4, 8, 16, 251, 502, 1004, 2008, 4016, 4871, 9742, 19484, 38968, 77936, 1222621, 2445242, 4890484, 9780968, 19561936]

約数ペア:

[(1, 19561936), (2, 9780968), (4, 4890484), (8, 2445242), (16, 1222621), (251, 77936), (502, 38968), (1004, 19484), (2008, 9742), (4016, 4871)]