20512880

素因数分解:

$2^4\times 5^1\times {\mathrm{17}}^1\times {\mathrm{15083}}^1$

素因数の和:15113

約数の個数: 40

約数和(自身を含む): 50501232

約数和(自身を除く): 29988352

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 34, 40, 68, 80, 85, 136, 170, 272, 340, 680, 1360, 15083, 30166, 60332, 75415, 120664, 150830, 241328, 256411, 301660, 512822, 603320, 1025644, 1206640, 1282055, 2051288, 2564110, 4102576, 5128220, 10256440, 20512880]

約数ペア:

[(1, 20512880), (2, 10256440), (4, 5128220), (5, 4102576), (8, 2564110), (10, 2051288), (16, 1282055), (17, 1206640), (20, 1025644), (34, 603320), (40, 512822), (68, 301660), (80, 256411), (85, 241328), (136, 150830), (170, 120664), (272, 75415), (340, 60332), (680, 30166), (1360, 15083)]