90689090

素因数分解:

$2^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{109}}^1\times {\mathrm{151}}^1$

素因数の和:315

約数の個数: 64

約数和(自身を含む): 180576000

約数和(自身を除く): 89886910

約数列:

[1, 2, 5, 10, 19, 29, 38, 58, 95, 109, 145, 151, 190, 218, 290, 302, 545, 551, 755, 1090, 1102, 1510, 2071, 2755, 2869, 3161, 4142, 4379, 5510, 5738, 6322, 8758, 10355, 14345, 15805, 16459, 20710, 21895, 28690, 31610, 32918, 43790, 60059, 82295, 83201, 120118, 164590, 166402, 300295, 312721, 416005, 477311, 600590, 625442, 832010, 954622, 1563605, 2386555, 3127210, 4773110, 9068909, 18137818, 45344545, 90689090]

約数ペア:

[(1, 90689090), (2, 45344545), (5, 18137818), (10, 9068909), (19, 4773110), (29, 3127210), (38, 2386555), (58, 1563605), (95, 954622), (109, 832010), (145, 625442), (151, 600590), (190, 477311), (218, 416005), (290, 312721), (302, 300295), (545, 166402), (551, 164590), (755, 120118), (1090, 83201), (1102, 82295), (1510, 60059), (2071, 43790), (2755, 32918), (2869, 31610), (3161, 28690), (4142, 21895), (4379, 20710), (5510, 16459), (5738, 15805), (6322, 14345), (8758, 10355)]