17993995

素因数分解:

$5^1\times {\mathrm{43}}^1\times {\mathrm{127}}^1\times {\mathrm{659}}^1$

素因数の和:834

約数の個数: 16

約数和(自身を含む): 22302720

約数和(自身を除く): 4308725

約数列:

[1, 5, 43, 127, 215, 635, 659, 3295, 5461, 27305, 28337, 83693, 141685, 418465, 3598799, 17993995]

約数ペア:

[(1, 17993995), (5, 3598799), (43, 418465), (127, 141685), (215, 83693), (635, 28337), (659, 27305), (3295, 5461)]