18685450

素因数分解:

$2^1\times 5^2\times 7^1\times {\mathrm{197}}^1\times {\mathrm{271}}^1$

素因数の和:487

約数の個数: 48

約数和(自身を含む): 40068864

約数和(自身を除く): 21383414

約数列:

[1, 2, 5, 7, 10, 14, 25, 35, 50, 70, 175, 197, 271, 350, 394, 542, 985, 1355, 1379, 1897, 1970, 2710, 2758, 3794, 4925, 6775, 6895, 9485, 9850, 13550, 13790, 18970, 34475, 47425, 53387, 68950, 94850, 106774, 266935, 373709, 533870, 747418, 1334675, 1868545, 2669350, 3737090, 9342725, 18685450]

約数ペア:

[(1, 18685450), (2, 9342725), (5, 3737090), (7, 2669350), (10, 1868545), (14, 1334675), (25, 747418), (35, 533870), (50, 373709), (70, 266935), (175, 106774), (197, 94850), (271, 68950), (350, 53387), (394, 47425), (542, 34475), (985, 18970), (1355, 13790), (1379, 13550), (1897, 9850), (1970, 9485), (2710, 6895), (2758, 6775), (3794, 4925)]