51990393

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{157}}^1\times {\mathrm{1213}}^1$

素因数の和:1393

約数の個数: 32

約数和(自身を含む): 85931776

約数和(自身を除く): 33941383

約数列:

[1, 3, 7, 13, 21, 39, 91, 157, 273, 471, 1099, 1213, 2041, 3297, 3639, 6123, 8491, 14287, 15769, 25473, 42861, 47307, 110383, 190441, 331149, 571323, 1333087, 2475733, 3999261, 7427199, 17330131, 51990393]

約数ペア:

[(1, 51990393), (3, 17330131), (7, 7427199), (13, 3999261), (21, 2475733), (39, 1333087), (91, 571323), (157, 331149), (273, 190441), (471, 110383), (1099, 47307), (1213, 42861), (2041, 25473), (3297, 15769), (3639, 14287), (6123, 8491)]