28574637

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{47}}^1\times {\mathrm{131}}^1$

素因数の和:218

約数の個数: 64

約数和(自身を含む): 51093504

約数和(自身を除く): 22518867

約数列:

[1, 3, 7, 13, 17, 21, 39, 47, 51, 91, 119, 131, 141, 221, 273, 329, 357, 393, 611, 663, 799, 917, 987, 1547, 1703, 1833, 2227, 2397, 2751, 4277, 4641, 5109, 5593, 6157, 6681, 10387, 11921, 12831, 15589, 16779, 18471, 28951, 31161, 35763, 43099, 46767, 72709, 80041, 86853, 104669, 129297, 202657, 218127, 240123, 314007, 560287, 607971, 732683, 1360697, 1680861, 2198049, 4082091, 9524879, 28574637]

約数ペア:

[(1, 28574637), (3, 9524879), (7, 4082091), (13, 2198049), (17, 1680861), (21, 1360697), (39, 732683), (47, 607971), (51, 560287), (91, 314007), (119, 240123), (131, 218127), (141, 202657), (221, 129297), (273, 104669), (329, 86853), (357, 80041), (393, 72709), (611, 46767), (663, 43099), (799, 35763), (917, 31161), (987, 28951), (1547, 18471), (1703, 16779), (1833, 15589), (2227, 12831), (2397, 11921), (2751, 10387), (4277, 6681), (4641, 6157), (5109, 5593)]