28987805

素因数分解:

$5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{103}}^1$

素因数の和:186

約数の個数: 64

約数和(自身を含む): 47443968

約数和(自身を除く): 18456163

約数列:

[1, 5, 7, 11, 17, 35, 43, 55, 77, 85, 103, 119, 187, 215, 301, 385, 473, 515, 595, 721, 731, 935, 1133, 1309, 1505, 1751, 2365, 3311, 3605, 3655, 4429, 5117, 5665, 6545, 7931, 8041, 8755, 12257, 16555, 19261, 22145, 25585, 31003, 39655, 40205, 48719, 56287, 61285, 75293, 96305, 134827, 155015, 243595, 281435, 341033, 376465, 527051, 674135, 828223, 1705165, 2635255, 4141115, 5797561, 28987805]

約数ペア:

[(1, 28987805), (5, 5797561), (7, 4141115), (11, 2635255), (17, 1705165), (35, 828223), (43, 674135), (55, 527051), (77, 376465), (85, 341033), (103, 281435), (119, 243595), (187, 155015), (215, 134827), (301, 96305), (385, 75293), (473, 61285), (515, 56287), (595, 48719), (721, 40205), (731, 39655), (935, 31003), (1133, 25585), (1309, 22145), (1505, 19261), (1751, 16555), (2365, 12257), (3311, 8755), (3605, 8041), (3655, 7931), (4429, 6545), (5117, 5665)]