21050120

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{5783}}^1$

素因数の和:5814

約数の個数: 64

約数和(自身を含む): 58302720

約数和(自身を除く): 37252600

約数列:

[1, 2, 4, 5, 7, 8, 10, 13, 14, 20, 26, 28, 35, 40, 52, 56, 65, 70, 91, 104, 130, 140, 182, 260, 280, 364, 455, 520, 728, 910, 1820, 3640, 5783, 11566, 23132, 28915, 40481, 46264, 57830, 75179, 80962, 115660, 150358, 161924, 202405, 231320, 300716, 323848, 375895, 404810, 526253, 601432, 751790, 809620, 1052506, 1503580, 1619240, 2105012, 2631265, 3007160, 4210024, 5262530, 10525060, 21050120]

約数ペア:

[(1, 21050120), (2, 10525060), (4, 5262530), (5, 4210024), (7, 3007160), (8, 2631265), (10, 2105012), (13, 1619240), (14, 1503580), (20, 1052506), (26, 809620), (28, 751790), (35, 601432), (40, 526253), (52, 404810), (56, 375895), (65, 323848), (70, 300716), (91, 231320), (104, 202405), (130, 161924), (140, 150358), (182, 115660), (260, 80962), (280, 75179), (364, 57830), (455, 46264), (520, 40481), (728, 28915), (910, 23132), (1820, 11566), (3640, 5783)]