71395960

素因数分解:

$2^3\times 5^1\times {\mathrm{139}}^1\times {\mathrm{12841}}^1$

素因数の和:12991

約数の個数: 32

約数和(自身を含む): 161809200

約数和(自身を除く): 90413240

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 139, 278, 556, 695, 1112, 1390, 2780, 5560, 12841, 25682, 51364, 64205, 102728, 128410, 256820, 513640, 1784899, 3569798, 7139596, 8924495, 14279192, 17848990, 35697980, 71395960]

約数ペア:

[(1, 71395960), (2, 35697980), (4, 17848990), (5, 14279192), (8, 8924495), (10, 7139596), (20, 3569798), (40, 1784899), (139, 513640), (278, 256820), (556, 128410), (695, 102728), (1112, 64205), (1390, 51364), (2780, 25682), (5560, 12841)]