18693125

素因数分解:

$5^4\times {\mathrm{11}}^1\times {\mathrm{2719}}^1$

素因数の和:2750

約数の個数: 20

約数和(自身を含む): 25491840

約数和(自身を除く): 6798715

約数列:

[1, 5, 11, 25, 55, 125, 275, 625, 1375, 2719, 6875, 13595, 29909, 67975, 149545, 339875, 747725, 1699375, 3738625, 18693125]

約数ペア:

[(1, 18693125), (5, 3738625), (11, 1699375), (25, 747725), (55, 339875), (125, 149545), (275, 67975), (625, 29909), (1375, 13595), (2719, 6875)]