21900025

素因数分解:

$5^2\times 7^1\times {\mathrm{23}}^1\times {\mathrm{5441}}^1$

素因数の和:5481

約数の個数: 24

約数和(自身を含む): 32390784

約数和(自身を除く): 10490759

約数列:

[1, 5, 7, 23, 25, 35, 115, 161, 175, 575, 805, 4025, 5441, 27205, 38087, 125143, 136025, 190435, 625715, 876001, 952175, 3128575, 4380005, 21900025]

約数ペア:

[(1, 21900025), (5, 4380005), (7, 3128575), (23, 952175), (25, 876001), (35, 625715), (115, 190435), (161, 136025), (175, 125143), (575, 38087), (805, 27205), (4025, 5441)]