21626025

素因数分解:

$3^1\times 5^2\times {\mathrm{29}}^1\times {\mathrm{61}}^1\times {\mathrm{163}}^1$

素因数の和:266

約数の個数: 48

約数和(自身を含む): 37824960

約数和(自身を除く): 16198935

約数列:

[1, 3, 5, 15, 25, 29, 61, 75, 87, 145, 163, 183, 305, 435, 489, 725, 815, 915, 1525, 1769, 2175, 2445, 4075, 4575, 4727, 5307, 8845, 9943, 12225, 14181, 23635, 26535, 29829, 44225, 49715, 70905, 118175, 132675, 149145, 248575, 288347, 354525, 745725, 865041, 1441735, 4325205, 7208675, 21626025]

約数ペア:

[(1, 21626025), (3, 7208675), (5, 4325205), (15, 1441735), (25, 865041), (29, 745725), (61, 354525), (75, 288347), (87, 248575), (145, 149145), (163, 132675), (183, 118175), (305, 70905), (435, 49715), (489, 44225), (725, 29829), (815, 26535), (915, 23635), (1525, 14181), (1769, 12225), (2175, 9943), (2445, 8845), (4075, 5307), (4575, 4727)]