15420625

素因数分解:

$5^4\times {\mathrm{11}}^1\times {\mathrm{2243}}^1$

素因数の和:2274

約数の個数: 20

約数和(自身を含む): 21030768

約数和(自身を除く): 5610143

約数列:

[1, 5, 11, 25, 55, 125, 275, 625, 1375, 2243, 6875, 11215, 24673, 56075, 123365, 280375, 616825, 1401875, 3084125, 15420625]

約数ペア:

[(1, 15420625), (5, 3084125), (11, 1401875), (25, 616825), (55, 280375), (125, 123365), (275, 56075), (625, 24673), (1375, 11215), (2243, 6875)]