81439775

素因数分解:

$5^2\times {\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{5179}}^1$

素因数の和:5243

約数の個数: 24

約数和(自身を含む): 109836720

約数和(自身を除く): 28396945

約数列:

[1, 5, 17, 25, 37, 85, 185, 425, 629, 925, 3145, 5179, 15725, 25895, 88043, 129475, 191623, 440215, 958115, 2201075, 3257591, 4790575, 16287955, 81439775]

約数ペア:

[(1, 81439775), (5, 16287955), (17, 4790575), (25, 3257591), (37, 2201075), (85, 958115), (185, 440215), (425, 191623), (629, 129475), (925, 88043), (3145, 25895), (5179, 15725)]