78578020

素因数分解:

$2^2\times 5^1\times {\mathrm{193}}^1\times {\mathrm{20357}}^1$

素因数の和:20559

約数の個数: 24

約数和(自身を含む): 165876984

約数和(自身を除く): 87298964

約数列:

[1, 2, 4, 5, 10, 20, 193, 386, 772, 965, 1930, 3860, 20357, 40714, 81428, 101785, 203570, 407140, 3928901, 7857802, 15715604, 19644505, 39289010, 78578020]

約数ペア:

[(1, 78578020), (2, 39289010), (4, 19644505), (5, 15715604), (10, 7857802), (20, 3928901), (193, 407140), (386, 203570), (772, 101785), (965, 81428), (1930, 40714), (3860, 20357)]