128579780

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{47}}^1\times {\mathrm{19541}}^1$

素因数の和:19604

約数の個数: 48

約数和(自身を含む): 315173376

約数和(自身を除く): 186593596

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 47, 70, 94, 140, 188, 235, 329, 470, 658, 940, 1316, 1645, 3290, 6580, 19541, 39082, 78164, 97705, 136787, 195410, 273574, 390820, 547148, 683935, 918427, 1367870, 1836854, 2735740, 3673708, 4592135, 6428989, 9184270, 12857978, 18368540, 25715956, 32144945, 64289890, 128579780]

約数ペア:

[(1, 128579780), (2, 64289890), (4, 32144945), (5, 25715956), (7, 18368540), (10, 12857978), (14, 9184270), (20, 6428989), (28, 4592135), (35, 3673708), (47, 2735740), (70, 1836854), (94, 1367870), (140, 918427), (188, 683935), (235, 547148), (329, 390820), (470, 273574), (658, 195410), (940, 136787), (1316, 97705), (1645, 78164), (3290, 39082), (6580, 19541)]