81380625

素因数分解:

$3^1\times 5^4\times {\mathrm{43403}}^1$

素因数の和:43426

約数の個数: 20

約数和(自身を含む): 135594096

約数和(自身を除く): 54213471

約数列:

[1, 3, 5, 15, 25, 75, 125, 375, 625, 1875, 43403, 130209, 217015, 651045, 1085075, 3255225, 5425375, 16276125, 27126875, 81380625]

約数ペア:

[(1, 81380625), (3, 27126875), (5, 16276125), (15, 5425375), (25, 3255225), (75, 1085075), (125, 651045), (375, 217015), (625, 130209), (1875, 43403)]