81015760

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{144671}}^1$

素因数の和:144691

約数の個数: 40

約数和(自身を含む): 215271936

約数和(自身を除く): 134256176

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 140, 280, 560, 144671, 289342, 578684, 723355, 1012697, 1157368, 1446710, 2025394, 2314736, 2893420, 4050788, 5063485, 5786840, 8101576, 10126970, 11573680, 16203152, 20253940, 40507880, 81015760]

約数ペア:

[(1, 81015760), (2, 40507880), (4, 20253940), (5, 16203152), (7, 11573680), (8, 10126970), (10, 8101576), (14, 5786840), (16, 5063485), (20, 4050788), (28, 2893420), (35, 2314736), (40, 2025394), (56, 1446710), (70, 1157368), (80, 1012697), (112, 723355), (140, 578684), (280, 289342), (560, 144671)]