18709460

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{12149}}^1$

素因数の和:12176

約数の個数: 48

約数和(自身を含む): 48988800

約数和(自身を除く): 30279340

約数列:

[1, 2, 4, 5, 7, 10, 11, 14, 20, 22, 28, 35, 44, 55, 70, 77, 110, 140, 154, 220, 308, 385, 770, 1540, 12149, 24298, 48596, 60745, 85043, 121490, 133639, 170086, 242980, 267278, 340172, 425215, 534556, 668195, 850430, 935473, 1336390, 1700860, 1870946, 2672780, 3741892, 4677365, 9354730, 18709460]

約数ペア:

[(1, 18709460), (2, 9354730), (4, 4677365), (5, 3741892), (7, 2672780), (10, 1870946), (11, 1700860), (14, 1336390), (20, 935473), (22, 850430), (28, 668195), (35, 534556), (44, 425215), (55, 340172), (70, 267278), (77, 242980), (110, 170086), (140, 133639), (154, 121490), (220, 85043), (308, 60745), (385, 48596), (770, 24298), (1540, 12149)]