21186480

素因数分解:

$2^4\times 3^1\times 5^1\times 7^1\times {\mathrm{12611}}^1$

素因数の和:12634

約数の個数: 80

約数和(自身を含む): 75066624

約数和(自身を除く): 53880144

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 16, 20, 21, 24, 28, 30, 35, 40, 42, 48, 56, 60, 70, 80, 84, 105, 112, 120, 140, 168, 210, 240, 280, 336, 420, 560, 840, 1680, 12611, 25222, 37833, 50444, 63055, 75666, 88277, 100888, 126110, 151332, 176554, 189165, 201776, 252220, 264831, 302664, 353108, 378330, 441385, 504440, 529662, 605328, 706216, 756660, 882770, 1008880, 1059324, 1324155, 1412432, 1513320, 1765540, 2118648, 2648310, 3026640, 3531080, 4237296, 5296620, 7062160, 10593240, 21186480]

約数ペア:

[(1, 21186480), (2, 10593240), (3, 7062160), (4, 5296620), (5, 4237296), (6, 3531080), (7, 3026640), (8, 2648310), (10, 2118648), (12, 1765540), (14, 1513320), (15, 1412432), (16, 1324155), (20, 1059324), (21, 1008880), (24, 882770), (28, 756660), (30, 706216), (35, 605328), (40, 529662), (42, 504440), (48, 441385), (56, 378330), (60, 353108), (70, 302664), (80, 264831), (84, 252220), (105, 201776), (112, 189165), (120, 176554), (140, 151332), (168, 126110), (210, 100888), (240, 88277), (280, 75666), (336, 63055), (420, 50444), (560, 37833), (840, 25222), (1680, 12611)]