856472720

素因数分解:

$2^4\times 5^1\times {\mathrm{647}}^1\times {\mathrm{16547}}^1$

素因数の和:17207

約数の個数: 40

約数和(自身を含む): 1994497344

約数和(自身を除く): 1138024624

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 647, 1294, 2588, 3235, 5176, 6470, 10352, 12940, 16547, 25880, 33094, 51760, 66188, 82735, 132376, 165470, 264752, 330940, 661880, 1323760, 10705909, 21411818, 42823636, 53529545, 85647272, 107059090, 171294544, 214118180, 428236360, 856472720]

約数ペア:

[(1, 856472720), (2, 428236360), (4, 214118180), (5, 171294544), (8, 107059090), (10, 85647272), (16, 53529545), (20, 42823636), (40, 21411818), (80, 10705909), (647, 1323760), (1294, 661880), (2588, 330940), (3235, 264752), (5176, 165470), (6470, 132376), (10352, 82735), (12940, 66188), (16547, 51760), (25880, 33094)]