209968125

素因数分解:

$3^1\times 5^4\times {\mathrm{113}}^1\times {\mathrm{991}}^1$

素因数の和:1127

約数の個数: 40

約数和(自身を含む): 353286912

約数和(自身を除く): 143318787

約数列:

[1, 3, 5, 15, 25, 75, 113, 125, 339, 375, 565, 625, 991, 1695, 1875, 2825, 2973, 4955, 8475, 14125, 14865, 24775, 42375, 70625, 74325, 111983, 123875, 211875, 335949, 371625, 559915, 619375, 1679745, 1858125, 2799575, 8398725, 13997875, 41993625, 69989375, 209968125]

約数ペア:

[(1, 209968125), (3, 69989375), (5, 41993625), (15, 13997875), (25, 8398725), (75, 2799575), (113, 1858125), (125, 1679745), (339, 619375), (375, 559915), (565, 371625), (625, 335949), (991, 211875), (1695, 123875), (1875, 111983), (2825, 74325), (2973, 70625), (4955, 42375), (8475, 24775), (14125, 14865)]