19998218

素因数分解:

$2^1\times {\mathrm{47}}^1\times {\mathrm{79}}^1\times {\mathrm{2693}}^1$

素因数の和:2821

約数の個数: 16

約数和(自身を含む): 31034880

約数和(自身を除く): 11036662

約数列:

[1, 2, 47, 79, 94, 158, 2693, 3713, 5386, 7426, 126571, 212747, 253142, 425494, 9999109, 19998218]

約数ペア:

[(1, 19998218), (2, 9999109), (47, 425494), (79, 253142), (94, 212747), (158, 126571), (2693, 7426), (3713, 5386)]