678478040

素因数分解:

$2^3\times 5^1\times {\mathrm{1289}}^1\times {\mathrm{13159}}^1$

素因数の和:14459

約数の個数: 32

約数和(自身を含む): 1527876000

約数和(自身を除く): 849397960

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 1289, 2578, 5156, 6445, 10312, 12890, 13159, 25780, 26318, 51560, 52636, 65795, 105272, 131590, 263180, 526360, 16961951, 33923902, 67847804, 84809755, 135695608, 169619510, 339239020, 678478040]

約数ペア:

[(1, 678478040), (2, 339239020), (4, 169619510), (5, 135695608), (8, 84809755), (10, 67847804), (20, 33923902), (40, 16961951), (1289, 526360), (2578, 263180), (5156, 131590), (6445, 105272), (10312, 65795), (12890, 52636), (13159, 51560), (25780, 26318)]