636745040

素因数分解:

$2^4\times 5^1\times {\mathrm{71}}^1\times {\mathrm{112103}}^1$

素因数の和:112187

約数の個数: 40

約数和(自身を含む): 1501296768

約数和(自身を除く): 864551728

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 71, 80, 142, 284, 355, 568, 710, 1136, 1420, 2840, 5680, 112103, 224206, 448412, 560515, 896824, 1121030, 1793648, 2242060, 4484120, 7959313, 8968240, 15918626, 31837252, 39796565, 63674504, 79593130, 127349008, 159186260, 318372520, 636745040]

約数ペア:

[(1, 636745040), (2, 318372520), (4, 159186260), (5, 127349008), (8, 79593130), (10, 63674504), (16, 39796565), (20, 31837252), (40, 15918626), (71, 8968240), (80, 7959313), (142, 4484120), (284, 2242060), (355, 1793648), (568, 1121030), (710, 896824), (1136, 560515), (1420, 448412), (2840, 224206), (5680, 112103)]