102290780

素因数分解:

$2^2\times 5^1\times {\mathrm{79}}^1\times {\mathrm{101}}^1\times {\mathrm{641}}^1$

素因数の和:830

約数の個数: 48

約数和(自身を含む): 220026240

約数和(自身を除く): 117735460

約数列:

[1, 2, 4, 5, 10, 20, 79, 101, 158, 202, 316, 395, 404, 505, 641, 790, 1010, 1282, 1580, 2020, 2564, 3205, 6410, 7979, 12820, 15958, 31916, 39895, 50639, 64741, 79790, 101278, 129482, 159580, 202556, 253195, 258964, 323705, 506390, 647410, 1012780, 1294820, 5114539, 10229078, 20458156, 25572695, 51145390, 102290780]

約数ペア:

[(1, 102290780), (2, 51145390), (4, 25572695), (5, 20458156), (10, 10229078), (20, 5114539), (79, 1294820), (101, 1012780), (158, 647410), (202, 506390), (316, 323705), (395, 258964), (404, 253195), (505, 202556), (641, 159580), (790, 129482), (1010, 101278), (1282, 79790), (1580, 64741), (2020, 50639), (2564, 39895), (3205, 31916), (6410, 15958), (7979, 12820)]