18666278

素因数分解:

$2^1\times {\mathrm{31}}^1\times {\mathrm{37}}^1\times {\mathrm{79}}^1\times {\mathrm{103}}^1$

素因数の和:252

約数の個数: 32

約数和(自身を含む): 30351360

約数和(自身を除く): 11685082

約数列:

[1, 2, 31, 37, 62, 74, 79, 103, 158, 206, 1147, 2294, 2449, 2923, 3193, 3811, 4898, 5846, 6386, 7622, 8137, 16274, 90613, 118141, 181226, 236282, 252247, 301069, 504494, 602138, 9333139, 18666278]

約数ペア:

[(1, 18666278), (2, 9333139), (31, 602138), (37, 504494), (62, 301069), (74, 252247), (79, 236282), (103, 181226), (158, 118141), (206, 90613), (1147, 16274), (2294, 8137), (2449, 7622), (2923, 6386), (3193, 5846), (3811, 4898)]