18761875

素因数分解:

$5^4\times {\mathrm{11}}^1\times {\mathrm{2729}}^1$

素因数の和:2760

約数の個数: 20

約数和(自身を含む): 25585560

約数和(自身を除く): 6823685

約数列:

[1, 5, 11, 25, 55, 125, 275, 625, 1375, 2729, 6875, 13645, 30019, 68225, 150095, 341125, 750475, 1705625, 3752375, 18761875]

約数ペア:

[(1, 18761875), (5, 3752375), (11, 1705625), (25, 750475), (55, 341125), (125, 150095), (275, 68225), (625, 30019), (1375, 13645), (2729, 6875)]