19480625

素因数分解:

$5^4\times {\mathrm{71}}^1\times {\mathrm{439}}^1$

素因数の和:530

約数の個数: 20

約数和(自身を含む): 24742080

約数和(自身を除く): 5261455

約数列:

[1, 5, 25, 71, 125, 355, 439, 625, 1775, 2195, 8875, 10975, 31169, 44375, 54875, 155845, 274375, 779225, 3896125, 19480625]

約数ペア:

[(1, 19480625), (5, 3896125), (25, 779225), (71, 274375), (125, 155845), (355, 54875), (439, 44375), (625, 31169), (1775, 10975), (2195, 8875)]