78868040

素因数分解:

$2^3\times 5^1\times {\mathrm{109}}^1\times {\mathrm{18089}}^1$

素因数の和:18209

約数の個数: 32

約数和(自身を含む): 179091000

約数和(自身を除く): 100222960

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 109, 218, 436, 545, 872, 1090, 2180, 4360, 18089, 36178, 72356, 90445, 144712, 180890, 361780, 723560, 1971701, 3943402, 7886804, 9858505, 15773608, 19717010, 39434020, 78868040]

約数ペア:

[(1, 78868040), (2, 39434020), (4, 19717010), (5, 15773608), (8, 9858505), (10, 7886804), (20, 3943402), (40, 1971701), (109, 723560), (218, 361780), (436, 180890), (545, 144712), (872, 90445), (1090, 72356), (2180, 36178), (4360, 18089)]