20181760

素因数分解:

$2^8\times 5^1\times {\mathrm{15767}}^1$

素因数の和:15788

約数の個数: 36

約数和(自身を含む): 48344688

約数和(自身を除く): 28162928

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 256, 320, 640, 1280, 15767, 31534, 63068, 78835, 126136, 157670, 252272, 315340, 504544, 630680, 1009088, 1261360, 2018176, 2522720, 4036352, 5045440, 10090880, 20181760]

約数ペア:

[(1, 20181760), (2, 10090880), (4, 5045440), (5, 4036352), (8, 2522720), (10, 2018176), (16, 1261360), (20, 1009088), (32, 630680), (40, 504544), (64, 315340), (80, 252272), (128, 157670), (160, 126136), (256, 78835), (320, 63068), (640, 31534), (1280, 15767)]