20715435

素因数分解:

$3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{2083}}^1$

素因数の和:2124

約数の個数: 48

約数和(自身を含む): 40963104

約数和(自身を除く): 20247669

約数列:

[1, 3, 5, 9, 13, 15, 17, 39, 45, 51, 65, 85, 117, 153, 195, 221, 255, 585, 663, 765, 1105, 1989, 2083, 3315, 6249, 9945, 10415, 18747, 27079, 31245, 35411, 81237, 93735, 106233, 135395, 177055, 243711, 318699, 406185, 460343, 531165, 1218555, 1381029, 1593495, 2301715, 4143087, 6905145, 20715435]

約数ペア:

[(1, 20715435), (3, 6905145), (5, 4143087), (9, 2301715), (13, 1593495), (15, 1381029), (17, 1218555), (39, 531165), (45, 460343), (51, 406185), (65, 318699), (85, 243711), (117, 177055), (153, 135395), (195, 106233), (221, 93735), (255, 81237), (585, 35411), (663, 31245), (765, 27079), (1105, 18747), (1989, 10415), (2083, 9945), (3315, 6249)]