20129280

素因数分解:

$2^9\times 3^1\times 5^1\times {\mathrm{2621}}^1$

素因数の和:2647

約数の個数: 80

約数和(自身を含む): 64375344

約数和(自身を除く): 44246064

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, 256, 320, 384, 480, 512, 640, 768, 960, 1280, 1536, 1920, 2560, 2621, 3840, 5242, 7680, 7863, 10484, 13105, 15726, 20968, 26210, 31452, 39315, 41936, 52420, 62904, 78630, 83872, 104840, 125808, 157260, 167744, 209680, 251616, 314520, 335488, 419360, 503232, 629040, 670976, 838720, 1006464, 1258080, 1341952, 1677440, 2012928, 2516160, 3354880, 4025856, 5032320, 6709760, 10064640, 20129280]

約数ペア:

[(1, 20129280), (2, 10064640), (3, 6709760), (4, 5032320), (5, 4025856), (6, 3354880), (8, 2516160), (10, 2012928), (12, 1677440), (15, 1341952), (16, 1258080), (20, 1006464), (24, 838720), (30, 670976), (32, 629040), (40, 503232), (48, 419360), (60, 335488), (64, 314520), (80, 251616), (96, 209680), (120, 167744), (128, 157260), (160, 125808), (192, 104840), (240, 83872), (256, 78630), (320, 62904), (384, 52420), (480, 41936), (512, 39315), (640, 31452), (768, 26210), (960, 20968), (1280, 15726), (1536, 13105), (1920, 10484), (2560, 7863), (2621, 7680), (3840, 5242)]