81118475

素因数分解:

$5^2\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{47}}^1\times {\mathrm{131}}^1$

素因数の和:236

約数の個数: 48

約数和(自身を含む): 113135616

約数和(自身を除く): 32017141

約数列:

[1, 5, 17, 25, 31, 47, 85, 131, 155, 235, 425, 527, 655, 775, 799, 1175, 1457, 2227, 2635, 3275, 3995, 4061, 6157, 7285, 11135, 13175, 19975, 20305, 24769, 30785, 36425, 55675, 69037, 101525, 104669, 123845, 153925, 190867, 345185, 523345, 619225, 954335, 1725925, 2616725, 3244739, 4771675, 16223695, 81118475]

約数ペア:

[(1, 81118475), (5, 16223695), (17, 4771675), (25, 3244739), (31, 2616725), (47, 1725925), (85, 954335), (131, 619225), (155, 523345), (235, 345185), (425, 190867), (527, 153925), (655, 123845), (775, 104669), (799, 101525), (1175, 69037), (1457, 55675), (2227, 36425), (2635, 30785), (3275, 24769), (3995, 20305), (4061, 19975), (6157, 13175), (7285, 11135)]