81582215

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^2\times {\mathrm{67}}^1\times {\mathrm{131}}^1$

素因数の和:240

約数の個数: 48

約数和(自身を含む): 118267776

約数和(自身を除く): 36685561

約数列:

[1, 5, 11, 13, 55, 65, 67, 131, 143, 169, 335, 655, 715, 737, 845, 871, 1441, 1703, 1859, 3685, 4355, 7205, 8515, 8777, 9295, 9581, 11323, 18733, 22139, 43885, 47905, 56615, 93665, 96547, 110695, 114101, 124553, 243529, 482735, 570505, 622765, 1217645, 1255111, 1483313, 6275555, 7416565, 16316443, 81582215]

約数ペア:

[(1, 81582215), (5, 16316443), (11, 7416565), (13, 6275555), (55, 1483313), (65, 1255111), (67, 1217645), (131, 622765), (143, 570505), (169, 482735), (335, 243529), (655, 124553), (715, 114101), (737, 110695), (845, 96547), (871, 93665), (1441, 56615), (1703, 47905), (1859, 43885), (3685, 22139), (4355, 18733), (7205, 11323), (8515, 9581), (8777, 9295)]