20115140

素因数分解:

$2^2\times 5^1\times {\mathrm{251}}^1\times {\mathrm{4007}}^1$

素因数の和:4267

約数の個数: 24

約数和(自身を含む): 42420672

約数和(自身を除く): 22305532

約数列:

[1, 2, 4, 5, 10, 20, 251, 502, 1004, 1255, 2510, 4007, 5020, 8014, 16028, 20035, 40070, 80140, 1005757, 2011514, 4023028, 5028785, 10057570, 20115140]

約数ペア:

[(1, 20115140), (2, 10057570), (4, 5028785), (5, 4023028), (10, 2011514), (20, 1005757), (251, 80140), (502, 40070), (1004, 20035), (1255, 16028), (2510, 8014), (4007, 5020)]