20107681

素因数分解:

${\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{47}}^1\times {\mathrm{89}}^1$

素因数の和:189

約数の個数: 32

約数和(自身を含む): 24883200

約数和(自身を除く): 4775519

約数列:

[1, 11, 19, 23, 47, 89, 209, 253, 437, 517, 893, 979, 1081, 1691, 2047, 4183, 4807, 9823, 11891, 18601, 20539, 22517, 38893, 46013, 79477, 96209, 225929, 427823, 874247, 1058299, 1827971, 20107681]

約数ペア:

[(1, 20107681), (11, 1827971), (19, 1058299), (23, 874247), (47, 427823), (89, 225929), (209, 96209), (253, 79477), (437, 46013), (517, 38893), (893, 22517), (979, 20539), (1081, 18601), (1691, 11891), (2047, 9823), (4183, 4807)]