28553217

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^2\times {\mathrm{17}}^1\times {\mathrm{661}}^1$

素因数の和:710

約数の個数: 48

約数和(自身を含む): 50714496

約数和(自身を除く): 22161279

約数列:

[1, 3, 7, 11, 17, 21, 33, 51, 77, 119, 121, 187, 231, 357, 363, 561, 661, 847, 1309, 1983, 2057, 2541, 3927, 4627, 6171, 7271, 11237, 13881, 14399, 21813, 33711, 43197, 50897, 78659, 79981, 123607, 152691, 235977, 239943, 370821, 559867, 865249, 1359677, 1679601, 2595747, 4079031, 9517739, 28553217]

約数ペア:

[(1, 28553217), (3, 9517739), (7, 4079031), (11, 2595747), (17, 1679601), (21, 1359677), (33, 865249), (51, 559867), (77, 370821), (119, 239943), (121, 235977), (187, 152691), (231, 123607), (357, 79981), (363, 78659), (561, 50897), (661, 43197), (847, 33711), (1309, 21813), (1983, 14399), (2057, 13881), (2541, 11237), (3927, 7271), (4627, 6171)]