20029975

素因数分解:

$5^2\times 7^2\times {\mathrm{83}}^1\times {\mathrm{197}}^1$

素因数の和:304

約数の個数: 36

約数和(自身を含む): 29388744

約数和(自身を除く): 9358769

約数列:

[1, 5, 7, 25, 35, 49, 83, 175, 197, 245, 415, 581, 985, 1225, 1379, 2075, 2905, 4067, 4925, 6895, 9653, 14525, 16351, 20335, 34475, 48265, 81755, 101675, 114457, 241325, 408775, 572285, 801199, 2861425, 4005995, 20029975]

約数ペア:

[(1, 20029975), (5, 4005995), (7, 2861425), (25, 801199), (35, 572285), (49, 408775), (83, 241325), (175, 114457), (197, 101675), (245, 81755), (415, 48265), (581, 34475), (985, 20335), (1225, 16351), (1379, 14525), (2075, 9653), (2905, 6895), (4067, 4925)]