641650

素因数分解:

$2^1\times 5^2\times {\mathrm{41}}^1\times {\mathrm{313}}^1$

素因数の和:366

約数の個数: 24

約数和(自身を含む): 1226484

約数和(自身を除く): 584834

約数列:

[1, 2, 5, 10, 25, 41, 50, 82, 205, 313, 410, 626, 1025, 1565, 2050, 3130, 7825, 12833, 15650, 25666, 64165, 128330, 320825, 641650]

約数ペア:

[(1, 641650), (2, 320825), (5, 128330), (10, 64165), (25, 25666), (41, 15650), (50, 12833), (82, 7825), (205, 3130), (313, 2050), (410, 1565), (626, 1025)]