128423820

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{305771}}^1$

素因数の和:305790

約数の個数: 48

約数和(自身を含む): 410957568

約数和(自身を除く): 282533748

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, 305771, 611542, 917313, 1223084, 1528855, 1834626, 2140397, 3057710, 3669252, 4280794, 4586565, 6115420, 6421191, 8561588, 9173130, 10701985, 12842382, 18346260, 21403970, 25684764, 32105955, 42807940, 64211910, 128423820]

約数ペア:

[(1, 128423820), (2, 64211910), (3, 42807940), (4, 32105955), (5, 25684764), (6, 21403970), (7, 18346260), (10, 12842382), (12, 10701985), (14, 9173130), (15, 8561588), (20, 6421191), (21, 6115420), (28, 4586565), (30, 4280794), (35, 3669252), (42, 3057710), (60, 2140397), (70, 1834626), (84, 1528855), (105, 1223084), (140, 917313), (210, 611542), (420, 305771)]