128623740

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{306247}}^1$

素因数の和:306266

約数の個数: 48

約数和(自身を含む): 411597312

約数和(自身を除く): 282973572

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 210, 420, 306247, 612494, 918741, 1224988, 1531235, 1837482, 2143729, 3062470, 3674964, 4287458, 4593705, 6124940, 6431187, 8574916, 9187410, 10718645, 12862374, 18374820, 21437290, 25724748, 32155935, 42874580, 64311870, 128623740]

約数ペア:

[(1, 128623740), (2, 64311870), (3, 42874580), (4, 32155935), (5, 25724748), (6, 21437290), (7, 18374820), (10, 12862374), (12, 10718645), (14, 9187410), (15, 8574916), (20, 6431187), (21, 6124940), (28, 4593705), (30, 4287458), (35, 3674964), (42, 3062470), (60, 2143729), (70, 1837482), (84, 1531235), (105, 1224988), (140, 918741), (210, 612494), (420, 306247)]