65520820

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{47}}^1\times {\mathrm{1621}}^1$

素因数の和:1720

約数の個数: 48

約数和(自身を含む): 143877888

約数和(自身を除く): 78357068

約数列:

[1, 2, 4, 5, 10, 20, 43, 47, 86, 94, 172, 188, 215, 235, 430, 470, 860, 940, 1621, 2021, 3242, 4042, 6484, 8084, 8105, 10105, 16210, 20210, 32420, 40420, 69703, 76187, 139406, 152374, 278812, 304748, 348515, 380935, 697030, 761870, 1394060, 1523740, 3276041, 6552082, 13104164, 16380205, 32760410, 65520820]

約数ペア:

[(1, 65520820), (2, 32760410), (4, 16380205), (5, 13104164), (10, 6552082), (20, 3276041), (43, 1523740), (47, 1394060), (86, 761870), (94, 697030), (172, 380935), (188, 348515), (215, 304748), (235, 278812), (430, 152374), (470, 139406), (860, 76187), (940, 69703), (1621, 40420), (2021, 32420), (3242, 20210), (4042, 16210), (6484, 10105), (8084, 8105)]