20474560

素因数分解:

$2^6\times 5^1\times {\mathrm{109}}^1\times {\mathrm{587}}^1$

素因数の和:713

約数の個数: 56

約数和(自身を含む): 49286160

約数和(自身を除く): 28811600

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 109, 160, 218, 320, 436, 545, 587, 872, 1090, 1174, 1744, 2180, 2348, 2935, 3488, 4360, 4696, 5870, 6976, 8720, 9392, 11740, 17440, 18784, 23480, 34880, 37568, 46960, 63983, 93920, 127966, 187840, 255932, 319915, 511864, 639830, 1023728, 1279660, 2047456, 2559320, 4094912, 5118640, 10237280, 20474560]

約数ペア:

[(1, 20474560), (2, 10237280), (4, 5118640), (5, 4094912), (8, 2559320), (10, 2047456), (16, 1279660), (20, 1023728), (32, 639830), (40, 511864), (64, 319915), (80, 255932), (109, 187840), (160, 127966), (218, 93920), (320, 63983), (436, 46960), (545, 37568), (587, 34880), (872, 23480), (1090, 18784), (1174, 17440), (1744, 11740), (2180, 9392), (2348, 8720), (2935, 6976), (3488, 5870), (4360, 4696)]