87121900

素因数分解:

$2^2\times 5^2\times {\mathrm{211}}^1\times {\mathrm{4129}}^1$

素因数の和:4354

約数の個数: 36

約数和(自身を含む): 189996520

約数和(自身を除く): 102874620

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 211, 422, 844, 1055, 2110, 4129, 4220, 5275, 8258, 10550, 16516, 20645, 21100, 41290, 82580, 103225, 206450, 412900, 871219, 1742438, 3484876, 4356095, 8712190, 17424380, 21780475, 43560950, 87121900]

約数ペア:

[(1, 87121900), (2, 43560950), (4, 21780475), (5, 17424380), (10, 8712190), (20, 4356095), (25, 3484876), (50, 1742438), (100, 871219), (211, 412900), (422, 206450), (844, 103225), (1055, 82580), (2110, 41290), (4129, 21100), (4220, 20645), (5275, 16516), (8258, 10550)]