28578788

素因数分解:

$2^2\times 7^1\times {\mathrm{23}}^1\times {\mathrm{199}}^1\times {\mathrm{223}}^1$

素因数の和:456

約数の個数: 48

約数和(自身を含む): 60211200

約数和(自身を除く): 31632412

約数列:

[1, 2, 4, 7, 14, 23, 28, 46, 92, 161, 199, 223, 322, 398, 446, 644, 796, 892, 1393, 1561, 2786, 3122, 4577, 5129, 5572, 6244, 9154, 10258, 18308, 20516, 32039, 35903, 44377, 64078, 71806, 88754, 128156, 143612, 177508, 310639, 621278, 1020671, 1242556, 2041342, 4082684, 7144697, 14289394, 28578788]

約数ペア:

[(1, 28578788), (2, 14289394), (4, 7144697), (7, 4082684), (14, 2041342), (23, 1242556), (28, 1020671), (46, 621278), (92, 310639), (161, 177508), (199, 143612), (223, 128156), (322, 88754), (398, 71806), (446, 64078), (644, 44377), (796, 35903), (892, 32039), (1393, 20516), (1561, 18308), (2786, 10258), (3122, 9154), (4577, 6244), (5129, 5572)]