21000918092

素因数分解:

$2^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{409}}^1\times {\mathrm{3877}}^1$

素因数の和:4351

約数の個数: 96

約数和(自身を含む): 47012528640

約数和(自身を除く): 26011610548

約数列:

[1, 2, 4, 7, 11, 14, 22, 28, 43, 44, 77, 86, 154, 172, 301, 308, 409, 473, 602, 818, 946, 1204, 1636, 1892, 2863, 3311, 3877, 4499, 5726, 6622, 7754, 8998, 11452, 13244, 15508, 17587, 17996, 27139, 31493, 35174, 42647, 54278, 62986, 70348, 85294, 108556, 123109, 125972, 166711, 170588, 193457, 246218, 298529, 333422, 386914, 492436, 597058, 666844, 773828, 1166977, 1194116, 1354199, 1585693, 1833821, 2333954, 2708398, 3171386, 3667642, 4667908, 5416796, 6342772, 7335284, 11099851, 12836747, 17442623, 22199702, 25673494, 34885246, 44399404, 51346988, 68184799, 69770492, 122098361, 136369598, 244196722, 272739196, 477293593, 488393444, 750032789, 954587186, 1500065578, 1909174372, 3000131156, 5250229523, 10500459046, 21000918092]

約数ペア:

[(1, 21000918092), (2, 10500459046), (4, 5250229523), (7, 3000131156), (11, 1909174372), (14, 1500065578), (22, 954587186), (28, 750032789), (43, 488393444), (44, 477293593), (77, 272739196), (86, 244196722), (154, 136369598), (172, 122098361), (301, 69770492), (308, 68184799), (409, 51346988), (473, 44399404), (602, 34885246), (818, 25673494), (946, 22199702), (1204, 17442623), (1636, 12836747), (1892, 11099851), (2863, 7335284), (3311, 6342772), (3877, 5416796), (4499, 4667908), (5726, 3667642), (6622, 3171386), (7754, 2708398), (8998, 2333954), (11452, 1833821), (13244, 1585693), (15508, 1354199), (17587, 1194116), (17996, 1166977), (27139, 773828), (31493, 666844), (35174, 597058), (42647, 492436), (54278, 386914), (62986, 333422), (70348, 298529), (85294, 246218), (108556, 193457), (123109, 170588), (125972, 166711)]