21277990

素因数分解:

$2^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{71}}^1\times {\mathrm{1303}}^1$

素因数の和:1404

約数の個数: 32

約数和(自身を含む): 40559616

約数和(自身を除く): 19281626

約数列:

[1, 2, 5, 10, 23, 46, 71, 115, 142, 230, 355, 710, 1303, 1633, 2606, 3266, 6515, 8165, 13030, 16330, 29969, 59938, 92513, 149845, 185026, 299690, 462565, 925130, 2127799, 4255598, 10638995, 21277990]

約数ペア:

[(1, 21277990), (2, 10638995), (5, 4255598), (10, 2127799), (23, 925130), (46, 462565), (71, 299690), (115, 185026), (142, 149845), (230, 92513), (355, 59938), (710, 29969), (1303, 16330), (1633, 13030), (2606, 8165), (3266, 6515)]