81013520

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{144667}}^1$

素因数の和:144687

約数の個数: 40

約数和(自身を含む): 215265984

約数和(自身を除く): 134252464

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 140, 280, 560, 144667, 289334, 578668, 723335, 1012669, 1157336, 1446670, 2025338, 2314672, 2893340, 4050676, 5063345, 5786680, 8101352, 10126690, 11573360, 16202704, 20253380, 40506760, 81013520]

約数ペア:

[(1, 81013520), (2, 40506760), (4, 20253380), (5, 16202704), (7, 11573360), (8, 10126690), (10, 8101352), (14, 5786680), (16, 5063345), (20, 4050676), (28, 2893340), (35, 2314672), (40, 2025338), (56, 1446670), (70, 1157336), (80, 1012669), (112, 723335), (140, 578668), (280, 289334), (560, 144667)]