81473730

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{208907}}^1$

素因数の和:208930

約数の個数: 32

約数和(自身を含む): 210579264

約数和(自身を除く): 129105534

約数列:

[1, 2, 3, 5, 6, 10, 13, 15, 26, 30, 39, 65, 78, 130, 195, 390, 208907, 417814, 626721, 1044535, 1253442, 2089070, 2715791, 3133605, 5431582, 6267210, 8147373, 13578955, 16294746, 27157910, 40736865, 81473730]

約数ペア:

[(1, 81473730), (2, 40736865), (3, 27157910), (5, 16294746), (6, 13578955), (10, 8147373), (13, 6267210), (15, 5431582), (26, 3133605), (30, 2715791), (39, 2089070), (65, 1253442), (78, 1044535), (130, 626721), (195, 417814), (390, 208907)]