20716840

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{27259}}^1$

素因数の和:27289

約数の個数: 32

約数和(自身を含む): 49068000

約数和(自身を除く): 28351160

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 76, 95, 152, 190, 380, 760, 27259, 54518, 109036, 136295, 218072, 272590, 517921, 545180, 1035842, 1090360, 2071684, 2589605, 4143368, 5179210, 10358420, 20716840]

約数ペア:

[(1, 20716840), (2, 10358420), (4, 5179210), (5, 4143368), (8, 2589605), (10, 2071684), (19, 1090360), (20, 1035842), (38, 545180), (40, 517921), (76, 272590), (95, 218072), (152, 136295), (190, 109036), (380, 54518), (760, 27259)]