81161990

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{89189}}^1$

素因数の和:89216

約数の個数: 32

約数和(自身を含む): 179807040

約数和(自身を除く): 98645050

約数列:

[1, 2, 5, 7, 10, 13, 14, 26, 35, 65, 70, 91, 130, 182, 455, 910, 89189, 178378, 445945, 624323, 891890, 1159457, 1248646, 2318914, 3121615, 5797285, 6243230, 8116199, 11594570, 16232398, 40580995, 81161990]

約数ペア:

[(1, 81161990), (2, 40580995), (5, 16232398), (7, 11594570), (10, 8116199), (13, 6243230), (14, 5797285), (26, 3121615), (35, 2318914), (65, 1248646), (70, 1159457), (91, 891890), (130, 624323), (182, 445945), (455, 178378), (910, 89189)]