20123657939

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{37}}^2\times {\mathrm{349}}^1\times {\mathrm{547}}^1$

素因数の和:988

約数の個数: 48

約数和(自身を含む): 25906809600

約数和(自身を除く): 5783151661

約数列:

[1, 7, 11, 37, 77, 259, 349, 407, 547, 1369, 2443, 2849, 3829, 3839, 6017, 9583, 12913, 15059, 20239, 26873, 42119, 90391, 105413, 141673, 142043, 190903, 222629, 477781, 748843, 994301, 1336321, 1558403, 2099933, 3344467, 5241901, 5255591, 7063411, 8237273, 14699531, 36789137, 49443877, 57660911, 77697521, 261346207, 543882647, 1829423449, 2874808277, 20123657939]

約数ペア:

[(1, 20123657939), (7, 2874808277), (11, 1829423449), (37, 543882647), (77, 261346207), (259, 77697521), (349, 57660911), (407, 49443877), (547, 36789137), (1369, 14699531), (2443, 8237273), (2849, 7063411), (3829, 5255591), (3839, 5241901), (6017, 3344467), (9583, 2099933), (12913, 1558403), (15059, 1336321), (20239, 994301), (26873, 748843), (42119, 477781), (90391, 222629), (105413, 190903), (141673, 142043)]