20860160

素因数分解:

$2^8\times 5^1\times {\mathrm{43}}^1\times {\mathrm{379}}^1$

素因数の和:443

約数の個数: 72

約数和(自身を含む): 51263520

約数和(自身を除く): 30403360

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 43, 64, 80, 86, 128, 160, 172, 215, 256, 320, 344, 379, 430, 640, 688, 758, 860, 1280, 1376, 1516, 1720, 1895, 2752, 3032, 3440, 3790, 5504, 6064, 6880, 7580, 11008, 12128, 13760, 15160, 16297, 24256, 27520, 30320, 32594, 48512, 55040, 60640, 65188, 81485, 97024, 121280, 130376, 162970, 242560, 260752, 325940, 485120, 521504, 651880, 1043008, 1303760, 2086016, 2607520, 4172032, 5215040, 10430080, 20860160]

約数ペア:

[(1, 20860160), (2, 10430080), (4, 5215040), (5, 4172032), (8, 2607520), (10, 2086016), (16, 1303760), (20, 1043008), (32, 651880), (40, 521504), (43, 485120), (64, 325940), (80, 260752), (86, 242560), (128, 162970), (160, 130376), (172, 121280), (215, 97024), (256, 81485), (320, 65188), (344, 60640), (379, 55040), (430, 48512), (640, 32594), (688, 30320), (758, 27520), (860, 24256), (1280, 16297), (1376, 15160), (1516, 13760), (1720, 12128), (1895, 11008), (2752, 7580), (3032, 6880), (3440, 6064), (3790, 5504)]