20386875

素因数分解:

$3^1\times 5^4\times {\mathrm{83}}^1\times {\mathrm{131}}^1$

素因数の和:237

約数の個数: 40

約数和(自身を含む): 34638912

約数和(自身を除く): 14252037

約数列:

[1, 3, 5, 15, 25, 75, 83, 125, 131, 249, 375, 393, 415, 625, 655, 1245, 1875, 1965, 2075, 3275, 6225, 9825, 10375, 10873, 16375, 31125, 32619, 49125, 51875, 54365, 81875, 155625, 163095, 245625, 271825, 815475, 1359125, 4077375, 6795625, 20386875]

約数ペア:

[(1, 20386875), (3, 6795625), (5, 4077375), (15, 1359125), (25, 815475), (75, 271825), (83, 245625), (125, 163095), (131, 155625), (249, 81875), (375, 54365), (393, 51875), (415, 49125), (625, 32619), (655, 31125), (1245, 16375), (1875, 10873), (1965, 10375), (2075, 9825), (3275, 6225)]