13221520

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{12713}}^1$

素因数の和:12739

約数の個数: 40

約数和(自身を含む): 33107256

約数和(自身を除く): 19885736

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 130, 208, 260, 520, 1040, 12713, 25426, 50852, 63565, 101704, 127130, 165269, 203408, 254260, 330538, 508520, 661076, 826345, 1017040, 1322152, 1652690, 2644304, 3305380, 6610760, 13221520]

約数ペア:

[(1, 13221520), (2, 6610760), (4, 3305380), (5, 2644304), (8, 1652690), (10, 1322152), (13, 1017040), (16, 826345), (20, 661076), (26, 508520), (40, 330538), (52, 254260), (65, 203408), (80, 165269), (104, 127130), (130, 101704), (208, 63565), (260, 50852), (520, 25426), (1040, 12713)]