20764250

素因数分解:

$2^1\times 5^3\times {\mathrm{13}}^1\times {\mathrm{6389}}^1$

素因数の和:6419

約数の個数: 32

約数和(自身を含む): 41867280

約数和(自身を除く): 21103030

約数列:

[1, 2, 5, 10, 13, 25, 26, 50, 65, 125, 130, 250, 325, 650, 1625, 3250, 6389, 12778, 31945, 63890, 83057, 159725, 166114, 319450, 415285, 798625, 830570, 1597250, 2076425, 4152850, 10382125, 20764250]

約数ペア:

[(1, 20764250), (2, 10382125), (5, 4152850), (10, 2076425), (13, 1597250), (25, 830570), (26, 798625), (50, 415285), (65, 319450), (125, 166114), (130, 159725), (250, 83057), (325, 63890), (650, 31945), (1625, 12778), (3250, 6389)]