20847525

素因数分解:

$3^1\times 5^2\times {\mathrm{17}}^1\times {\mathrm{83}}^1\times {\mathrm{197}}^1$

素因数の和:310

約数の個数: 48

約数和(自身を含む): 37122624

約数和(自身を除く): 16275099

約数列:

[1, 3, 5, 15, 17, 25, 51, 75, 83, 85, 197, 249, 255, 415, 425, 591, 985, 1245, 1275, 1411, 2075, 2955, 3349, 4233, 4925, 6225, 7055, 10047, 14775, 16351, 16745, 21165, 35275, 49053, 50235, 81755, 83725, 105825, 245265, 251175, 277967, 408775, 833901, 1226325, 1389835, 4169505, 6949175, 20847525]

約数ペア:

[(1, 20847525), (3, 6949175), (5, 4169505), (15, 1389835), (17, 1226325), (25, 833901), (51, 408775), (75, 277967), (83, 251175), (85, 245265), (197, 105825), (249, 83725), (255, 81755), (415, 50235), (425, 49053), (591, 35275), (985, 21165), (1245, 16745), (1275, 16351), (1411, 14775), (2075, 10047), (2955, 7055), (3349, 6225), (4233, 4925)]