20147575

素因数分解:

$5^2\times 7^2\times {\mathrm{16447}}^1$

素因数の和:16471

約数の個数: 18

約数和(自身を含む): 29063616

約数和(自身を除く): 8916041

約数列:

[1, 5, 7, 25, 35, 49, 175, 245, 1225, 16447, 82235, 115129, 411175, 575645, 805903, 2878225, 4029515, 20147575]

約数ペア:

[(1, 20147575), (5, 4029515), (7, 2878225), (25, 805903), (35, 575645), (49, 411175), (175, 115129), (245, 82235), (1225, 16447)]