81978240

素因数分解:

$2^7\times 3^1\times 5^1\times {\mathrm{42697}}^1$

素因数の和:42719

約数の個数: 64

約数和(自身を含む): 261311760

約数和(自身を除く): 179333520

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 32, 40, 48, 60, 64, 80, 96, 120, 128, 160, 192, 240, 320, 384, 480, 640, 960, 1920, 42697, 85394, 128091, 170788, 213485, 256182, 341576, 426970, 512364, 640455, 683152, 853940, 1024728, 1280910, 1366304, 1707880, 2049456, 2561820, 2732608, 3415760, 4098912, 5123640, 5465216, 6831520, 8197824, 10247280, 13663040, 16395648, 20494560, 27326080, 40989120, 81978240]

約数ペア:

[(1, 81978240), (2, 40989120), (3, 27326080), (4, 20494560), (5, 16395648), (6, 13663040), (8, 10247280), (10, 8197824), (12, 6831520), (15, 5465216), (16, 5123640), (20, 4098912), (24, 3415760), (30, 2732608), (32, 2561820), (40, 2049456), (48, 1707880), (60, 1366304), (64, 1280910), (80, 1024728), (96, 853940), (120, 683152), (128, 640455), (160, 512364), (192, 426970), (240, 341576), (320, 256182), (384, 213485), (480, 170788), (640, 128091), (960, 85394), (1920, 42697)]