678977180

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{1097}}^1\times {\mathrm{4421}}^1$

素因数の和:5534

約数の個数: 48

約数和(自身を含む): 1631399616

約数和(自身を除く): 952422436

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 1097, 2194, 4388, 4421, 5485, 7679, 8842, 10970, 15358, 17684, 21940, 22105, 30716, 30947, 38395, 44210, 61894, 76790, 88420, 123788, 153580, 154735, 309470, 618940, 4849837, 9699674, 19399348, 24249185, 33948859, 48498370, 67897718, 96996740, 135795436, 169744295, 339488590, 678977180]

約数ペア:

[(1, 678977180), (2, 339488590), (4, 169744295), (5, 135795436), (7, 96996740), (10, 67897718), (14, 48498370), (20, 33948859), (28, 24249185), (35, 19399348), (70, 9699674), (140, 4849837), (1097, 618940), (2194, 309470), (4388, 154735), (4421, 153580), (5485, 123788), (7679, 88420), (8842, 76790), (10970, 61894), (15358, 44210), (17684, 38395), (21940, 30947), (22105, 30716)]