128215318

素因数分解:

$2^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{107}}^1\times {\mathrm{251}}^1$

素因数の和:409

約数の個数: 64

約数和(自身を含む): 250822656

約数和(自身を除く): 122607338

約数列:

[1, 2, 7, 11, 14, 22, 31, 62, 77, 107, 154, 214, 217, 251, 341, 434, 502, 682, 749, 1177, 1498, 1757, 2354, 2387, 2761, 3317, 3514, 4774, 5522, 6634, 7781, 8239, 15562, 16478, 19327, 23219, 26857, 36487, 38654, 46438, 53714, 54467, 72974, 85591, 108934, 171182, 187999, 255409, 295427, 375998, 510818, 590854, 599137, 832567, 1198274, 1665134, 2067989, 4135978, 5827969, 9158237, 11655938, 18316474, 64107659, 128215318]

約数ペア:

[(1, 128215318), (2, 64107659), (7, 18316474), (11, 11655938), (14, 9158237), (22, 5827969), (31, 4135978), (62, 2067989), (77, 1665134), (107, 1198274), (154, 832567), (214, 599137), (217, 590854), (251, 510818), (341, 375998), (434, 295427), (502, 255409), (682, 187999), (749, 171182), (1177, 108934), (1498, 85591), (1757, 72974), (2354, 54467), (2387, 53714), (2761, 46438), (3317, 38654), (3514, 36487), (4774, 26857), (5522, 23219), (6634, 19327), (7781, 16478), (8239, 15562)]