647836839

素因数分解:

$3^3\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{42923}}^1$

素因数の和:42988

約数の個数: 32

約数和(自身を含む): 1057647360

約数和(自身を除く): 409810521

約数列:

[1, 3, 9, 13, 27, 39, 43, 117, 129, 351, 387, 559, 1161, 1677, 5031, 15093, 42923, 128769, 386307, 557999, 1158921, 1673997, 1845689, 5021991, 5537067, 15065973, 16611201, 23993957, 49833603, 71981871, 215945613, 647836839]

約数ペア:

[(1, 647836839), (3, 215945613), (9, 71981871), (13, 49833603), (27, 23993957), (39, 16611201), (43, 15065973), (117, 5537067), (129, 5021991), (351, 1845689), (387, 1673997), (559, 1158921), (1161, 557999), (1677, 386307), (5031, 128769), (15093, 42923)]