72021761

素因数分解:

$7^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{71}}^1\times {\mathrm{263}}^1$

素因数の和:389

約数の個数: 32

約数和(自身を含む): 91238400

約数和(自身を除く): 19216639

約数列:

[1, 7, 19, 29, 71, 133, 203, 263, 497, 551, 1349, 1841, 2059, 3857, 4997, 7627, 9443, 14413, 18673, 34979, 39121, 53389, 130711, 144913, 273847, 354787, 541517, 1014391, 2483509, 3790619, 10288823, 72021761]

約数ペア:

[(1, 72021761), (7, 10288823), (19, 3790619), (29, 2483509), (71, 1014391), (133, 541517), (203, 354787), (263, 273847), (497, 144913), (551, 130711), (1349, 53389), (1841, 39121), (2059, 34979), (3857, 18673), (4997, 14413), (7627, 9443)]