25421205

素因数分解:

$3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{131}}^1\times {\mathrm{761}}^1$

素因数の和:917

約数の個数: 32

約数和(自身を含む): 43452288

約数和(自身を除く): 18031083

約数列:

[1, 3, 5, 15, 17, 51, 85, 131, 255, 393, 655, 761, 1965, 2227, 2283, 3805, 6681, 11135, 11415, 12937, 33405, 38811, 64685, 99691, 194055, 299073, 498455, 1495365, 1694747, 5084241, 8473735, 25421205]

約数ペア:

[(1, 25421205), (3, 8473735), (5, 5084241), (15, 1694747), (17, 1495365), (51, 498455), (85, 299073), (131, 194055), (255, 99691), (393, 64685), (655, 38811), (761, 33405), (1965, 12937), (2227, 11415), (2283, 11135), (3805, 6681)]