28710276

素因数分解:

$2^2\times 3^1\times 7^2\times {\mathrm{157}}^1\times {\mathrm{311}}^1$

素因数の和:489

約数の個数: 72

約数和(自身を含む): 78676416

約数和(自身を除く): 49966140

約数列:

[1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, 49, 84, 98, 147, 157, 196, 294, 311, 314, 471, 588, 622, 628, 933, 942, 1099, 1244, 1866, 1884, 2177, 2198, 3297, 3732, 4354, 4396, 6531, 6594, 7693, 8708, 13062, 13188, 15239, 15386, 23079, 26124, 30478, 30772, 45717, 46158, 48827, 60956, 91434, 92316, 97654, 146481, 182868, 195308, 292962, 341789, 585924, 683578, 1025367, 1367156, 2050734, 2392523, 4101468, 4785046, 7177569, 9570092, 14355138, 28710276]

約数ペア:

[(1, 28710276), (2, 14355138), (3, 9570092), (4, 7177569), (6, 4785046), (7, 4101468), (12, 2392523), (14, 2050734), (21, 1367156), (28, 1025367), (42, 683578), (49, 585924), (84, 341789), (98, 292962), (147, 195308), (157, 182868), (196, 146481), (294, 97654), (311, 92316), (314, 91434), (471, 60956), (588, 48827), (622, 46158), (628, 45717), (933, 30772), (942, 30478), (1099, 26124), (1244, 23079), (1866, 15386), (1884, 15239), (2177, 13188), (2198, 13062), (3297, 8708), (3732, 7693), (4354, 6594), (4396, 6531)]