21664976255

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{1993}}^1\times {\mathrm{4079}}^1$

素因数の和:6131

約数の個数: 32

約数和(自身を含む): 28702114560

約数和(自身を除く): 7037138305

約数列:

[1, 5, 13, 41, 65, 205, 533, 1993, 2665, 4079, 9965, 20395, 25909, 53027, 81713, 129545, 167239, 265135, 408565, 836195, 1062269, 2174107, 5311345, 8129447, 10870535, 40647235, 105682811, 333307327, 528414055, 1666536635, 4332995251, 21664976255]

約数ペア:

[(1, 21664976255), (5, 4332995251), (13, 1666536635), (41, 528414055), (65, 333307327), (205, 105682811), (533, 40647235), (1993, 10870535), (2665, 8129447), (4079, 5311345), (9965, 2174107), (20395, 1062269), (25909, 836195), (53027, 408565), (81713, 265135), (129545, 167239)]