20785360

素因数分解:

$2^4\times 5^1\times {\mathrm{41}}^1\times {\mathrm{6337}}^1$

素因数の和:6391

約数の個数: 40

約数和(自身を含む): 49512456

約数和(自身を除く): 28727096

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 41, 80, 82, 164, 205, 328, 410, 656, 820, 1640, 3280, 6337, 12674, 25348, 31685, 50696, 63370, 101392, 126740, 253480, 259817, 506960, 519634, 1039268, 1299085, 2078536, 2598170, 4157072, 5196340, 10392680, 20785360]

約数ペア:

[(1, 20785360), (2, 10392680), (4, 5196340), (5, 4157072), (8, 2598170), (10, 2078536), (16, 1299085), (20, 1039268), (40, 519634), (41, 506960), (80, 259817), (82, 253480), (164, 126740), (205, 101392), (328, 63370), (410, 50696), (656, 31685), (820, 25348), (1640, 12674), (3280, 6337)]