20492720

素因数分解:

$2^4\times 5^1\times {\mathrm{127}}^1\times {\mathrm{2017}}^1$

素因数の和:2157

約数の個数: 40

約数和(自身を含む): 48044544

約数和(自身を除く): 27551824

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 127, 254, 508, 635, 1016, 1270, 2017, 2032, 2540, 4034, 5080, 8068, 10085, 10160, 16136, 20170, 32272, 40340, 80680, 161360, 256159, 512318, 1024636, 1280795, 2049272, 2561590, 4098544, 5123180, 10246360, 20492720]

約数ペア:

[(1, 20492720), (2, 10246360), (4, 5123180), (5, 4098544), (8, 2561590), (10, 2049272), (16, 1280795), (20, 1024636), (40, 512318), (80, 256159), (127, 161360), (254, 80680), (508, 40340), (635, 32272), (1016, 20170), (1270, 16136), (2017, 10160), (2032, 10085), (2540, 8068), (4034, 5080)]