16886875

素因数分解:

$5^4\times {\mathrm{41}}^1\times {\mathrm{659}}^1$

素因数の和:720

約数の個数: 20

約数和(自身を含む): 21649320

約数和(自身を除く): 4762445

約数列:

[1, 5, 25, 41, 125, 205, 625, 659, 1025, 3295, 5125, 16475, 25625, 27019, 82375, 135095, 411875, 675475, 3377375, 16886875]

約数ペア:

[(1, 16886875), (5, 3377375), (25, 675475), (41, 411875), (125, 135095), (205, 82375), (625, 27019), (659, 25625), (1025, 16475), (3295, 5125)]