81766860

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{194683}}^1$

素因数の和:194702

約数の個数: 48

約数和(自身を含む): 261655296

約数和(自身を除く): 179888436

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 210, 420, 194683, 389366, 584049, 778732, 973415, 1168098, 1362781, 1946830, 2336196, 2725562, 2920245, 3893660, 4088343, 5451124, 5840490, 6813905, 8176686, 11680980, 13627810, 16353372, 20441715, 27255620, 40883430, 81766860]

約数ペア:

[(1, 81766860), (2, 40883430), (3, 27255620), (4, 20441715), (5, 16353372), (6, 13627810), (7, 11680980), (10, 8176686), (12, 6813905), (14, 5840490), (15, 5451124), (20, 4088343), (21, 3893660), (28, 2920245), (30, 2725562), (35, 2336196), (42, 1946830), (60, 1362781), (70, 1168098), (84, 973415), (105, 778732), (140, 584049), (210, 389366), (420, 194683)]