21388320

素因数分解:

$2^5\times 3^3\times 5^1\times {\mathrm{4951}}^1$

素因数の和:4975

約数の個数: 96

約数和(自身を含む): 74874240

約数和(自身を除く): 53485920

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 27, 30, 32, 36, 40, 45, 48, 54, 60, 72, 80, 90, 96, 108, 120, 135, 144, 160, 180, 216, 240, 270, 288, 360, 432, 480, 540, 720, 864, 1080, 1440, 2160, 4320, 4951, 9902, 14853, 19804, 24755, 29706, 39608, 44559, 49510, 59412, 74265, 79216, 89118, 99020, 118824, 133677, 148530, 158432, 178236, 198040, 222795, 237648, 267354, 297060, 356472, 396080, 445590, 475296, 534708, 594120, 668385, 712944, 792160, 891180, 1069416, 1188240, 1336770, 1425888, 1782360, 2138832, 2376480, 2673540, 3564720, 4277664, 5347080, 7129440, 10694160, 21388320]

約数ペア:

[(1, 21388320), (2, 10694160), (3, 7129440), (4, 5347080), (5, 4277664), (6, 3564720), (8, 2673540), (9, 2376480), (10, 2138832), (12, 1782360), (15, 1425888), (16, 1336770), (18, 1188240), (20, 1069416), (24, 891180), (27, 792160), (30, 712944), (32, 668385), (36, 594120), (40, 534708), (45, 475296), (48, 445590), (54, 396080), (60, 356472), (72, 297060), (80, 267354), (90, 237648), (96, 222795), (108, 198040), (120, 178236), (135, 158432), (144, 148530), (160, 133677), (180, 118824), (216, 99020), (240, 89118), (270, 79216), (288, 74265), (360, 59412), (432, 49510), (480, 44559), (540, 39608), (720, 29706), (864, 24755), (1080, 19804), (1440, 14853), (2160, 9902), (4320, 4951)]