19890845

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{103}}^1\times {\mathrm{2971}}^1$

素因数の和:3092

約数の個数: 16

約数和(自身を含む): 25963392

約数和(自身を除く): 6072547

約数列:

[1, 5, 13, 65, 103, 515, 1339, 2971, 6695, 14855, 38623, 193115, 306013, 1530065, 3978169, 19890845]

約数ペア:

[(1, 19890845), (5, 3978169), (13, 1530065), (65, 306013), (103, 193115), (515, 38623), (1339, 14855), (2971, 6695)]