85907780

素因数分解:

$2^2\times 5^1\times 7^4\times {\mathrm{1789}}^1$

素因数の和:1826

約数の個数: 60

約数和(自身を含む): 210579180

約数和(自身を除く): 124671400

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 343, 490, 686, 980, 1372, 1715, 1789, 2401, 3430, 3578, 4802, 6860, 7156, 8945, 9604, 12005, 12523, 17890, 24010, 25046, 35780, 48020, 50092, 62615, 87661, 125230, 175322, 250460, 350644, 438305, 613627, 876610, 1227254, 1753220, 2454508, 3068135, 4295389, 6136270, 8590778, 12272540, 17181556, 21476945, 42953890, 85907780]

約数ペア:

[(1, 85907780), (2, 42953890), (4, 21476945), (5, 17181556), (7, 12272540), (10, 8590778), (14, 6136270), (20, 4295389), (28, 3068135), (35, 2454508), (49, 1753220), (70, 1227254), (98, 876610), (140, 613627), (196, 438305), (245, 350644), (343, 250460), (490, 175322), (686, 125230), (980, 87661), (1372, 62615), (1715, 50092), (1789, 48020), (2401, 35780), (3430, 25046), (3578, 24010), (4802, 17890), (6860, 12523), (7156, 12005), (8945, 9604)]