20181954820

素因数分解:

$2^2\times 5^1\times {\mathrm{4027}}^1\times {\mathrm{250583}}^1$

素因数の和:254619

約数の個数: 24

約数和(自身を含む): 42392798784

約数和(自身を除く): 22210843964

約数列:

[1, 2, 4, 5, 10, 20, 4027, 8054, 16108, 20135, 40270, 80540, 250583, 501166, 1002332, 1252915, 2505830, 5011660, 1009097741, 2018195482, 4036390964, 5045488705, 10090977410, 20181954820]

約数ペア:

[(1, 20181954820), (2, 10090977410), (4, 5045488705), (5, 4036390964), (10, 2018195482), (20, 1009097741), (4027, 5011660), (8054, 2505830), (16108, 1252915), (20135, 1002332), (40270, 501166), (80540, 250583)]