61991165

素因数分解:

$5^1\times {\mathrm{31}}^1\times {\mathrm{43}}^1\times {\mathrm{71}}^1\times {\mathrm{131}}^1$

素因数の和:281

約数の個数: 32

約数和(自身を含む): 80289792

約数和(自身を除く): 18298627

約数列:

[1, 5, 31, 43, 71, 131, 155, 215, 355, 655, 1333, 2201, 3053, 4061, 5633, 6665, 9301, 11005, 15265, 20305, 28165, 46505, 94643, 174623, 288331, 399943, 473215, 873115, 1441655, 1999715, 12398233, 61991165]

約数ペア:

[(1, 61991165), (5, 12398233), (31, 1999715), (43, 1441655), (71, 873115), (131, 473215), (155, 399943), (215, 288331), (355, 174623), (655, 94643), (1333, 46505), (2201, 28165), (3053, 20305), (4061, 15265), (5633, 11005), (6665, 9301)]