81807810

素因数分解:

$2^1\times 3^1\times 5^1\times 7^1\times {\mathrm{389561}}^1$

素因数の和:389578

約数の個数: 32

約数和(自身を含む): 224387712

約数和(自身を除く): 142579902

約数列:

[1, 2, 3, 5, 6, 7, 10, 14, 15, 21, 30, 35, 42, 70, 105, 210, 389561, 779122, 1168683, 1947805, 2337366, 2726927, 3895610, 5453854, 5843415, 8180781, 11686830, 13634635, 16361562, 27269270, 40903905, 81807810]

約数ペア:

[(1, 81807810), (2, 40903905), (3, 27269270), (5, 16361562), (6, 13634635), (7, 11686830), (10, 8180781), (14, 5843415), (15, 5453854), (21, 3895610), (30, 2726927), (35, 2337366), (42, 1947805), (70, 1168683), (105, 779122), (210, 389561)]