21142814

素因数分解:

$2^1\times 7^2\times {\mathrm{11}}^2\times {\mathrm{1783}}^1$

素因数の和:1821

約数の個数: 36

約数和(自身を含む): 40573512

約数和(自身を除く): 19430698

約数列:

[1, 2, 7, 11, 14, 22, 49, 77, 98, 121, 154, 242, 539, 847, 1078, 1694, 1783, 3566, 5929, 11858, 12481, 19613, 24962, 39226, 87367, 137291, 174734, 215743, 274582, 431486, 961037, 1510201, 1922074, 3020402, 10571407, 21142814]

約数ペア:

[(1, 21142814), (2, 10571407), (7, 3020402), (11, 1922074), (14, 1510201), (22, 961037), (49, 431486), (77, 274582), (98, 215743), (121, 174734), (154, 137291), (242, 87367), (539, 39226), (847, 24962), (1078, 19613), (1694, 12481), (1783, 11858), (3566, 5929)]