21000786612

素因数分解:

$2^2\times 3^1\times {\mathrm{13}}^1\times {\mathrm{7873}}^1\times {\mathrm{17099}}^1$

素因数の和:24992

約数の個数: 48

約数和(自身を含む): 52780996800

約数和(自身を除く): 31780210188

約数列:

[1, 2, 3, 4, 6, 12, 13, 26, 39, 52, 78, 156, 7873, 15746, 17099, 23619, 31492, 34198, 47238, 51297, 68396, 94476, 102349, 102594, 204698, 205188, 222287, 307047, 409396, 444574, 614094, 666861, 889148, 1228188, 1333722, 2667444, 134620427, 269240854, 403861281, 538481708, 807722562, 1615445124, 1750065551, 3500131102, 5250196653, 7000262204, 10500393306, 21000786612]

約数ペア:

[(1, 21000786612), (2, 10500393306), (3, 7000262204), (4, 5250196653), (6, 3500131102), (12, 1750065551), (13, 1615445124), (26, 807722562), (39, 538481708), (52, 403861281), (78, 269240854), (156, 134620427), (7873, 2667444), (15746, 1333722), (17099, 1228188), (23619, 889148), (31492, 666861), (34198, 614094), (47238, 444574), (51297, 409396), (68396, 307047), (94476, 222287), (102349, 205188), (102594, 204698)]