419788940

素因数分解:

$2^2\times 5^1\times {\mathrm{257}}^1\times {\mathrm{81671}}^1$

素因数の和:81937

約数の個数: 24

約数和(自身を含む): 884997792

約数和(自身を除く): 465208852

約数列:

[1, 2, 4, 5, 10, 20, 257, 514, 1028, 1285, 2570, 5140, 81671, 163342, 326684, 408355, 816710, 1633420, 20989447, 41978894, 83957788, 104947235, 209894470, 419788940]

約数ペア:

[(1, 419788940), (2, 209894470), (4, 104947235), (5, 83957788), (10, 41978894), (20, 20989447), (257, 1633420), (514, 816710), (1028, 408355), (1285, 326684), (2570, 163342), (5140, 81671)]