81794560

素因数分解:

$2^9\times 5^1\times {\mathrm{89}}^1\times {\mathrm{359}}^1$

素因数の和:471

約数の個数: 80

約数和(自身を含む): 198871200

約数和(自身を除く): 117076640

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 89, 128, 160, 178, 256, 320, 356, 359, 445, 512, 640, 712, 718, 890, 1280, 1424, 1436, 1780, 1795, 2560, 2848, 2872, 3560, 3590, 5696, 5744, 7120, 7180, 11392, 11488, 14240, 14360, 22784, 22976, 28480, 28720, 31951, 45568, 45952, 56960, 57440, 63902, 91904, 113920, 114880, 127804, 159755, 183808, 227840, 229760, 255608, 319510, 459520, 511216, 639020, 919040, 1022432, 1278040, 2044864, 2556080, 4089728, 5112160, 8179456, 10224320, 16358912, 20448640, 40897280, 81794560]

約数ペア:

[(1, 81794560), (2, 40897280), (4, 20448640), (5, 16358912), (8, 10224320), (10, 8179456), (16, 5112160), (20, 4089728), (32, 2556080), (40, 2044864), (64, 1278040), (80, 1022432), (89, 919040), (128, 639020), (160, 511216), (178, 459520), (256, 319510), (320, 255608), (356, 229760), (359, 227840), (445, 183808), (512, 159755), (640, 127804), (712, 114880), (718, 113920), (890, 91904), (1280, 63902), (1424, 57440), (1436, 56960), (1780, 45952), (1795, 45568), (2560, 31951), (2848, 28720), (2872, 28480), (3560, 22976), (3590, 22784), (5696, 14360), (5744, 14240), (7120, 11488), (7180, 11392)]