21130468

素因数分解:

$2^2\times {\mathrm{23}}^1\times {\mathrm{31}}^2\times {\mathrm{239}}^1$

素因数の和:328

約数の個数: 36

約数和(自身を含む): 40037760

約数和(自身を除く): 18907292

約数列:

[1, 2, 4, 23, 31, 46, 62, 92, 124, 239, 478, 713, 956, 961, 1426, 1922, 2852, 3844, 5497, 7409, 10994, 14818, 21988, 22103, 29636, 44206, 88412, 170407, 229679, 340814, 459358, 681628, 918716, 5282617, 10565234, 21130468]

約数ペア:

[(1, 21130468), (2, 10565234), (4, 5282617), (23, 918716), (31, 681628), (46, 459358), (62, 340814), (92, 229679), (124, 170407), (239, 88412), (478, 44206), (713, 29636), (956, 22103), (961, 21988), (1426, 14818), (1922, 10994), (2852, 7409), (3844, 5497)]