20806960

素因数分解:

$2^4\times 5^1\times {\mathrm{179}}^1\times {\mathrm{1453}}^1$

素因数の和:1645

約数の個数: 40

約数和(自身を含む): 48679920

約数和(自身を除く): 27872960

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 179, 358, 716, 895, 1432, 1453, 1790, 2864, 2906, 3580, 5812, 7160, 7265, 11624, 14320, 14530, 23248, 29060, 58120, 116240, 260087, 520174, 1040348, 1300435, 2080696, 2600870, 4161392, 5201740, 10403480, 20806960]

約数ペア:

[(1, 20806960), (2, 10403480), (4, 5201740), (5, 4161392), (8, 2600870), (10, 2080696), (16, 1300435), (20, 1040348), (40, 520174), (80, 260087), (179, 116240), (358, 58120), (716, 29060), (895, 23248), (1432, 14530), (1453, 14320), (1790, 11624), (2864, 7265), (2906, 7160), (3580, 5812)]