61988990

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{443}}^1\times {\mathrm{1999}}^1$

素因数の和:2456

約数の個数: 32

約数和(自身を含む): 127872000

約数和(自身を除く): 65883010

約数列:

[1, 2, 5, 7, 10, 14, 35, 70, 443, 886, 1999, 2215, 3101, 3998, 4430, 6202, 9995, 13993, 15505, 19990, 27986, 31010, 69965, 139930, 885557, 1771114, 4427785, 6198899, 8855570, 12397798, 30994495, 61988990]

約数ペア:

[(1, 61988990), (2, 30994495), (5, 12397798), (7, 8855570), (10, 6198899), (14, 4427785), (35, 1771114), (70, 885557), (443, 139930), (886, 69965), (1999, 31010), (2215, 27986), (3101, 19990), (3998, 15505), (4430, 13993), (6202, 9995)]