20412860

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{78511}}^1$

素因数の和:78533

約数の個数: 24

約数和(自身を含む): 46165056

約数和(自身を除く): 25752196

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 78511, 157022, 314044, 392555, 785110, 1020643, 1570220, 2041286, 4082572, 5103215, 10206430, 20412860]

約数ペア:

[(1, 20412860), (2, 10206430), (4, 5103215), (5, 4082572), (10, 2041286), (13, 1570220), (20, 1020643), (26, 785110), (52, 392555), (65, 314044), (130, 157022), (260, 78511)]