19780012

素因数分解:

$2^2\times 7^1\times {\mathrm{109}}^1\times {\mathrm{6481}}^1$

素因数の和:6601

約数の個数: 24

約数和(自身を含む): 39929120

約数和(自身を除く): 20149108

約数列:

[1, 2, 4, 7, 14, 28, 109, 218, 436, 763, 1526, 3052, 6481, 12962, 25924, 45367, 90734, 181468, 706429, 1412858, 2825716, 4945003, 9890006, 19780012]

約数ペア:

[(1, 19780012), (2, 9890006), (4, 4945003), (7, 2825716), (14, 1412858), (28, 706429), (109, 181468), (218, 90734), (436, 45367), (763, 25924), (1526, 12962), (3052, 6481)]