66555400

素因数分解:

$2^3\times 5^2\times {\mathrm{43}}^1\times {\mathrm{71}}^1\times {\mathrm{109}}^1$

素因数の和:239

約数の個数: 96

約数和(自身を含む): 162043200

約数和(自身を除く): 95487800

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 43, 50, 71, 86, 100, 109, 142, 172, 200, 215, 218, 284, 344, 355, 430, 436, 545, 568, 710, 860, 872, 1075, 1090, 1420, 1720, 1775, 2150, 2180, 2725, 2840, 3053, 3550, 4300, 4360, 4687, 5450, 6106, 7100, 7739, 8600, 9374, 10900, 12212, 14200, 15265, 15478, 18748, 21800, 23435, 24424, 30530, 30956, 37496, 38695, 46870, 61060, 61912, 76325, 77390, 93740, 117175, 122120, 152650, 154780, 187480, 193475, 234350, 305300, 309560, 332777, 386950, 468700, 610600, 665554, 773900, 937400, 1331108, 1547800, 1663885, 2662216, 3327770, 6655540, 8319425, 13311080, 16638850, 33277700, 66555400]

約数ペア:

[(1, 66555400), (2, 33277700), (4, 16638850), (5, 13311080), (8, 8319425), (10, 6655540), (20, 3327770), (25, 2662216), (40, 1663885), (43, 1547800), (50, 1331108), (71, 937400), (86, 773900), (100, 665554), (109, 610600), (142, 468700), (172, 386950), (200, 332777), (215, 309560), (218, 305300), (284, 234350), (344, 193475), (355, 187480), (430, 154780), (436, 152650), (545, 122120), (568, 117175), (710, 93740), (860, 77390), (872, 76325), (1075, 61912), (1090, 61060), (1420, 46870), (1720, 38695), (1775, 37496), (2150, 30956), (2180, 30530), (2725, 24424), (2840, 23435), (3053, 21800), (3550, 18748), (4300, 15478), (4360, 15265), (4687, 14200), (5450, 12212), (6106, 10900), (7100, 9374), (7739, 8600)]