128850640

素因数分解:

$2^4\times 5^1\times {\mathrm{89}}^1\times {\mathrm{18097}}^1$

素因数の和:18199

約数の個数: 40

約数和(自身を含む): 302960520

約数和(自身を除く): 174109880

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 89, 178, 356, 445, 712, 890, 1424, 1780, 3560, 7120, 18097, 36194, 72388, 90485, 144776, 180970, 289552, 361940, 723880, 1447760, 1610633, 3221266, 6442532, 8053165, 12885064, 16106330, 25770128, 32212660, 64425320, 128850640]

約数ペア:

[(1, 128850640), (2, 64425320), (4, 32212660), (5, 25770128), (8, 16106330), (10, 12885064), (16, 8053165), (20, 6442532), (40, 3221266), (80, 1610633), (89, 1447760), (178, 723880), (356, 361940), (445, 289552), (712, 180970), (890, 144776), (1424, 90485), (1780, 72388), (3560, 36194), (7120, 18097)]