221458857

素因数分解:

$3^1\times {\mathrm{53}}^1\times {\mathrm{83}}^1\times {\mathrm{97}}^1\times {\mathrm{173}}^1$

素因数の和:409

約数の個数: 32

約数和(自身を含む): 309391488

約数和(自身を除く): 87932631

約数列:

[1, 3, 53, 83, 97, 159, 173, 249, 291, 519, 4399, 5141, 8051, 9169, 13197, 14359, 15423, 16781, 24153, 27507, 43077, 50343, 426703, 761027, 889393, 1280109, 1392823, 2283081, 2668179, 4178469, 73819619, 221458857]

約数ペア:

[(1, 221458857), (3, 73819619), (53, 4178469), (83, 2668179), (97, 2283081), (159, 1392823), (173, 1280109), (249, 889393), (291, 761027), (519, 426703), (4399, 50343), (5141, 43077), (8051, 27507), (9169, 24153), (13197, 16781), (14359, 15423)]