18788875

素因数分解:

$5^3\times 7^1\times {\mathrm{109}}^1\times {\mathrm{197}}^1$

素因数の和:328

約数の個数: 32

約数和(自身を含む): 27181440

約数和(自身を除く): 8392565

約数列:

[1, 5, 7, 25, 35, 109, 125, 175, 197, 545, 763, 875, 985, 1379, 2725, 3815, 4925, 6895, 13625, 19075, 21473, 24625, 34475, 95375, 107365, 150311, 172375, 536825, 751555, 2684125, 3757775, 18788875]

約数ペア:

[(1, 18788875), (5, 3757775), (7, 2684125), (25, 751555), (35, 536825), (109, 172375), (125, 150311), (175, 107365), (197, 95375), (545, 34475), (763, 24625), (875, 21473), (985, 19075), (1379, 13625), (2725, 6895), (3815, 4925)]