20128831480

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{1117}}^1\times {\mathrm{10477}}^1$

素因数の和:11648

約数の個数: 64

約数和(自身を含む): 46389039840

約数和(自身を除く): 26260208360

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 86, 172, 215, 344, 430, 860, 1117, 1720, 2234, 4468, 5585, 8936, 10477, 11170, 20954, 22340, 41908, 44680, 48031, 52385, 83816, 96062, 104770, 192124, 209540, 240155, 384248, 419080, 450511, 480310, 901022, 960620, 1802044, 1921240, 2252555, 3604088, 4505110, 9010220, 11702809, 18020440, 23405618, 46811236, 58514045, 93622472, 117028090, 234056180, 468112360, 503220787, 1006441574, 2012883148, 2516103935, 4025766296, 5032207870, 10064415740, 20128831480]

約数ペア:

[(1, 20128831480), (2, 10064415740), (4, 5032207870), (5, 4025766296), (8, 2516103935), (10, 2012883148), (20, 1006441574), (40, 503220787), (43, 468112360), (86, 234056180), (172, 117028090), (215, 93622472), (344, 58514045), (430, 46811236), (860, 23405618), (1117, 18020440), (1720, 11702809), (2234, 9010220), (4468, 4505110), (5585, 3604088), (8936, 2252555), (10477, 1921240), (11170, 1802044), (20954, 960620), (22340, 901022), (41908, 480310), (44680, 450511), (48031, 419080), (52385, 384248), (83816, 240155), (96062, 209540), (104770, 192124)]