31913739

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{137}}^1\times {\mathrm{181}}^1$

素因数の和:348

約数の個数: 48

約数和(自身を含む): 54853344

約数和(自身を除く): 22939605

約数列:

[1, 3, 9, 11, 13, 33, 39, 99, 117, 137, 143, 181, 411, 429, 543, 1233, 1287, 1507, 1629, 1781, 1991, 2353, 4521, 5343, 5973, 7059, 13563, 16029, 17919, 19591, 21177, 24797, 25883, 58773, 74391, 77649, 176319, 223173, 232947, 272767, 322361, 818301, 967083, 2454903, 2901249, 3545971, 10637913, 31913739]

約数ペア:

[(1, 31913739), (3, 10637913), (9, 3545971), (11, 2901249), (13, 2454903), (33, 967083), (39, 818301), (99, 322361), (117, 272767), (137, 232947), (143, 223173), (181, 176319), (411, 77649), (429, 74391), (543, 58773), (1233, 25883), (1287, 24797), (1507, 21177), (1629, 19591), (1781, 17919), (1991, 16029), (2353, 13563), (4521, 7059), (5343, 5973)]