85141720

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{59}}^1\times {\mathrm{839}}^1$

素因数の和:952

約数の個数: 64

約数和(自身を含む): 199584000

約数和(自身を除く): 114442280

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 59, 86, 118, 172, 215, 236, 295, 344, 430, 472, 590, 839, 860, 1180, 1678, 1720, 2360, 2537, 3356, 4195, 5074, 6712, 8390, 10148, 12685, 16780, 20296, 25370, 33560, 36077, 49501, 50740, 72154, 99002, 101480, 144308, 180385, 198004, 247505, 288616, 360770, 396008, 495010, 721540, 990020, 1443080, 1980040, 2128543, 4257086, 8514172, 10642715, 17028344, 21285430, 42570860, 85141720]

約数ペア:

[(1, 85141720), (2, 42570860), (4, 21285430), (5, 17028344), (8, 10642715), (10, 8514172), (20, 4257086), (40, 2128543), (43, 1980040), (59, 1443080), (86, 990020), (118, 721540), (172, 495010), (215, 396008), (236, 360770), (295, 288616), (344, 247505), (430, 198004), (472, 180385), (590, 144308), (839, 101480), (860, 99002), (1180, 72154), (1678, 50740), (1720, 49501), (2360, 36077), (2537, 33560), (3356, 25370), (4195, 20296), (5074, 16780), (6712, 12685), (8390, 10148)]