31931757

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{577}}^1$

素因数の和:650

約数の個数: 48

約数和(自身を含む): 55543488

約数和(自身を除く): 23611731

約数列:

[1, 3, 9, 11, 13, 33, 39, 43, 99, 117, 129, 143, 387, 429, 473, 559, 577, 1287, 1419, 1677, 1731, 4257, 5031, 5193, 6149, 6347, 7501, 18447, 19041, 22503, 24811, 55341, 57123, 67509, 74433, 82511, 223299, 247533, 272921, 322543, 742599, 818763, 967629, 2456289, 2902887, 3547973, 10643919, 31931757]

約数ペア:

[(1, 31931757), (3, 10643919), (9, 3547973), (11, 2902887), (13, 2456289), (33, 967629), (39, 818763), (43, 742599), (99, 322543), (117, 272921), (129, 247533), (143, 223299), (387, 82511), (429, 74433), (473, 67509), (559, 57123), (577, 55341), (1287, 24811), (1419, 22503), (1677, 19041), (1731, 18447), (4257, 7501), (5031, 6347), (5193, 6149)]