291259787

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{67}}^2$

素因数の和:208

約数の個数: 48

約数和(自身を含む): 391974912

約数和(自身を除く): 100715125

約数列:

[1, 7, 13, 23, 31, 67, 91, 161, 217, 299, 403, 469, 713, 871, 1541, 2077, 2093, 2821, 4489, 4991, 6097, 9269, 10787, 14539, 20033, 27001, 31423, 47771, 58357, 64883, 103247, 139159, 140231, 189007, 334397, 408499, 621023, 722729, 974113, 1342211, 1809067, 3200657, 4347161, 9395477, 12663469, 22404599, 41608541, 291259787]

約数ペア:

[(1, 291259787), (7, 41608541), (13, 22404599), (23, 12663469), (31, 9395477), (67, 4347161), (91, 3200657), (161, 1809067), (217, 1342211), (299, 974113), (403, 722729), (469, 621023), (713, 408499), (871, 334397), (1541, 189007), (2077, 140231), (2093, 139159), (2821, 103247), (4489, 64883), (4991, 58357), (6097, 47771), (9269, 31423), (10787, 27001), (14539, 20033)]