81019225

素因数分解:

$5^2\times 7^1\times {\mathrm{23}}^1\times {\mathrm{20129}}^1$

素因数の和:20169

約数の個数: 24

約数和(自身を含む): 119813760

約数和(自身を除く): 38794535

約数列:

[1, 5, 7, 23, 25, 35, 115, 161, 175, 575, 805, 4025, 20129, 100645, 140903, 462967, 503225, 704515, 2314835, 3240769, 3522575, 11574175, 16203845, 81019225]

約数ペア:

[(1, 81019225), (5, 16203845), (7, 11574175), (23, 3522575), (25, 3240769), (35, 2314835), (115, 704515), (161, 503225), (175, 462967), (575, 140903), (805, 100645), (4025, 20129)]