16500625

素因数分解:

$5^4\times {\mathrm{17}}^1\times {\mathrm{1553}}^1$

素因数の和:1590

約数の個数: 20

約数和(自身を含む): 21846132

約数和(自身を除く): 5345507

約数列:

[1, 5, 17, 25, 85, 125, 425, 625, 1553, 2125, 7765, 10625, 26401, 38825, 132005, 194125, 660025, 970625, 3300125, 16500625]

約数ペア:

[(1, 16500625), (5, 3300125), (17, 970625), (25, 660025), (85, 194125), (125, 132005), (425, 38825), (625, 26401), (1553, 10625), (2125, 7765)]