20004986

素因数分解:

$2^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{47}}^1\times {\mathrm{487}}^1$

素因数の和:578

約数の個数: 32

約数和(自身を含む): 33730560

約数和(自身を除く): 13725574

約数列:

[1, 2, 19, 23, 38, 46, 47, 94, 437, 487, 874, 893, 974, 1081, 1786, 2162, 9253, 11201, 18506, 20539, 22402, 22889, 41078, 45778, 212819, 425638, 434891, 526447, 869782, 1052894, 10002493, 20004986]

約数ペア:

[(1, 20004986), (2, 10002493), (19, 1052894), (23, 869782), (38, 526447), (46, 434891), (47, 425638), (94, 212819), (437, 45778), (487, 41078), (874, 22889), (893, 22402), (974, 20539), (1081, 18506), (1786, 11201), (2162, 9253)]