21807520

素因数分解:

$2^5\times 5^1\times 7^1\times {\mathrm{19471}}^1$

素因数の和:19493

約数の個数: 48

約数和(自身を含む): 58883328

約数和(自身を除く): 37075808

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 56, 70, 80, 112, 140, 160, 224, 280, 560, 1120, 19471, 38942, 77884, 97355, 136297, 155768, 194710, 272594, 311536, 389420, 545188, 623072, 681485, 778840, 1090376, 1362970, 1557680, 2180752, 2725940, 3115360, 4361504, 5451880, 10903760, 21807520]

約数ペア:

[(1, 21807520), (2, 10903760), (4, 5451880), (5, 4361504), (7, 3115360), (8, 2725940), (10, 2180752), (14, 1557680), (16, 1362970), (20, 1090376), (28, 778840), (32, 681485), (35, 623072), (40, 545188), (56, 389420), (70, 311536), (80, 272594), (112, 194710), (140, 155768), (160, 136297), (224, 97355), (280, 77884), (560, 38942), (1120, 19471)]