81729690

素因数分解:

$2^1\times 3^1\times 5^1\times 7^1\times {\mathrm{389189}}^1$

素因数の和:389206

約数の個数: 32

約数和(自身を含む): 224173440

約数和(自身を除く): 142443750

約数列:

[1, 2, 3, 5, 6, 7, 10, 14, 15, 21, 30, 35, 42, 70, 105, 210, 389189, 778378, 1167567, 1945945, 2335134, 2724323, 3891890, 5448646, 5837835, 8172969, 11675670, 13621615, 16345938, 27243230, 40864845, 81729690]

約数ペア:

[(1, 81729690), (2, 40864845), (3, 27243230), (5, 16345938), (6, 13621615), (7, 11675670), (10, 8172969), (14, 5837835), (15, 5448646), (21, 3891890), (30, 2724323), (35, 2335134), (42, 1945945), (70, 1167567), (105, 778378), (210, 389189)]