20618125

素因数分解:

$5^4\times {\mathrm{11}}^1\times {\mathrm{2999}}^1$

素因数の和:3030

約数の個数: 20

約数和(自身を含む): 28116000

約数和(自身を除く): 7497875

約数列:

[1, 5, 11, 25, 55, 125, 275, 625, 1375, 2999, 6875, 14995, 32989, 74975, 164945, 374875, 824725, 1874375, 4123625, 20618125]

約数ペア:

[(1, 20618125), (5, 4123625), (11, 1874375), (25, 824725), (55, 374875), (125, 164945), (275, 74975), (625, 32989), (1375, 14995), (2999, 6875)]