221811107

素因数分解:

$7^1\times {\mathrm{31}}^1\times {\mathrm{41}}^1\times {\mathrm{107}}^1\times {\mathrm{233}}^1$

素因数の和:419

約数の個数: 32

約数和(自身を含む): 271724544

約数和(自身を除く): 49913437

約数列:

[1, 7, 31, 41, 107, 217, 233, 287, 749, 1271, 1631, 3317, 4387, 7223, 8897, 9553, 23219, 24931, 30709, 50561, 66871, 135997, 174517, 296143, 772861, 951979, 1022171, 2073001, 5410027, 7155197, 31687301, 221811107]

約数ペア:

[(1, 221811107), (7, 31687301), (31, 7155197), (41, 5410027), (107, 2073001), (217, 1022171), (233, 951979), (287, 772861), (749, 296143), (1271, 174517), (1631, 135997), (3317, 66871), (4387, 50561), (7223, 30709), (8897, 24931), (9553, 23219)]