78064400

素因数分解:

$2^4\times 5^2\times {\mathrm{195161}}^1$

素因数の和:195179

約数の個数: 30

約数和(自身を含む): 187550682

約数和(自身を除く): 109486282

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 200, 400, 195161, 390322, 780644, 975805, 1561288, 1951610, 3122576, 3903220, 4879025, 7806440, 9758050, 15612880, 19516100, 39032200, 78064400]

約数ペア:

[(1, 78064400), (2, 39032200), (4, 19516100), (5, 15612880), (8, 9758050), (10, 7806440), (16, 4879025), (20, 3903220), (25, 3122576), (40, 1951610), (50, 1561288), (80, 975805), (100, 780644), (200, 390322), (400, 195161)]