21691978

素因数分解:

$2^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{79}}^1\times {\mathrm{1783}}^1$

素因数の和:1882

約数の個数: 32

約数和(自身を含む): 41103360

約数和(自身を除く): 19411382

約数列:

[1, 2, 7, 11, 14, 22, 77, 79, 154, 158, 553, 869, 1106, 1738, 1783, 3566, 6083, 12166, 12481, 19613, 24962, 39226, 137291, 140857, 274582, 281714, 985999, 1549427, 1971998, 3098854, 10845989, 21691978]

約数ペア:

[(1, 21691978), (2, 10845989), (7, 3098854), (11, 1971998), (14, 1549427), (22, 985999), (77, 281714), (79, 274582), (154, 140857), (158, 137291), (553, 39226), (869, 24962), (1106, 19613), (1738, 12481), (1783, 12166), (3566, 6083)]