18060625

素因数分解:

$5^4\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{71}}^1$

素因数の和:139

約数の個数: 40

約数和(自身を含む): 25641792

約数和(自身を除く): 7581167

約数列:

[1, 5, 11, 25, 37, 55, 71, 125, 185, 275, 355, 407, 625, 781, 925, 1375, 1775, 2035, 2627, 3905, 4625, 6875, 8875, 10175, 13135, 19525, 23125, 28897, 44375, 50875, 65675, 97625, 144485, 254375, 328375, 488125, 722425, 1641875, 3612125, 18060625]

約数ペア:

[(1, 18060625), (5, 3612125), (11, 1641875), (25, 722425), (37, 488125), (55, 328375), (71, 254375), (125, 144485), (185, 97625), (275, 65675), (355, 50875), (407, 44375), (625, 28897), (781, 23125), (925, 19525), (1375, 13135), (1775, 10175), (2035, 8875), (2627, 6875), (3905, 4625)]