190017989

素因数分解:

$7^1\times {\mathrm{43}}^1\times {\mathrm{61}}^1\times {\mathrm{79}}^1\times {\mathrm{131}}^1$

素因数の和:321

約数の個数: 32

約数和(自身を含む): 230461440

約数和(自身を除く): 40443451

約数列:

[1, 7, 43, 61, 79, 131, 301, 427, 553, 917, 2623, 3397, 4819, 5633, 7991, 10349, 18361, 23779, 33733, 39431, 55937, 72443, 207217, 343613, 445007, 631289, 1450519, 2405291, 3115049, 4419023, 27145427, 190017989]

約数ペア:

[(1, 190017989), (7, 27145427), (43, 4419023), (61, 3115049), (79, 2405291), (131, 1450519), (301, 631289), (427, 445007), (553, 343613), (917, 207217), (2623, 72443), (3397, 55937), (4819, 39431), (5633, 33733), (7991, 23779), (10349, 18361)]