20701875

素因数分解:

$3^1\times 5^4\times {\mathrm{61}}^1\times {\mathrm{181}}^1$

素因数の和:265

約数の個数: 40

約数和(自身を含む): 35251216

約数和(自身を除く): 14549341

約数列:

[1, 3, 5, 15, 25, 61, 75, 125, 181, 183, 305, 375, 543, 625, 905, 915, 1525, 1875, 2715, 4525, 4575, 7625, 11041, 13575, 22625, 22875, 33123, 38125, 55205, 67875, 113125, 114375, 165615, 276025, 339375, 828075, 1380125, 4140375, 6900625, 20701875]

約数ペア:

[(1, 20701875), (3, 6900625), (5, 4140375), (15, 1380125), (25, 828075), (61, 339375), (75, 276025), (125, 165615), (181, 114375), (183, 113125), (305, 67875), (375, 55205), (543, 38125), (625, 33123), (905, 22875), (915, 22625), (1525, 13575), (1875, 11041), (2715, 7625), (4525, 4575)]