20969925

素因数分解:

$3^1\times 5^2\times {\mathrm{17}}^1\times {\mathrm{16447}}^1$

素因数の和:16477

約数の個数: 24

約数和(自身を含む): 36711936

約数和(自身を除く): 15742011

約数列:

[1, 3, 5, 15, 17, 25, 51, 75, 85, 255, 425, 1275, 16447, 49341, 82235, 246705, 279599, 411175, 838797, 1233525, 1397995, 4193985, 6989975, 20969925]

約数ペア:

[(1, 20969925), (3, 6989975), (5, 4193985), (15, 1397995), (17, 1233525), (25, 838797), (51, 411175), (75, 279599), (85, 246705), (255, 82235), (425, 49341), (1275, 16447)]