20605120

素因数分解:

$2^6\times 5^1\times {\mathrm{19}}^1\times {\mathrm{3389}}^1$

素因数の和:3425

約数の個数: 56

約数和(自身を含む): 51663600

約数和(自身を除く): 31058480

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 32, 38, 40, 64, 76, 80, 95, 152, 160, 190, 304, 320, 380, 608, 760, 1216, 1520, 3040, 3389, 6080, 6778, 13556, 16945, 27112, 33890, 54224, 64391, 67780, 108448, 128782, 135560, 216896, 257564, 271120, 321955, 515128, 542240, 643910, 1030256, 1084480, 1287820, 2060512, 2575640, 4121024, 5151280, 10302560, 20605120]

約数ペア:

[(1, 20605120), (2, 10302560), (4, 5151280), (5, 4121024), (8, 2575640), (10, 2060512), (16, 1287820), (19, 1084480), (20, 1030256), (32, 643910), (38, 542240), (40, 515128), (64, 321955), (76, 271120), (80, 257564), (95, 216896), (152, 135560), (160, 128782), (190, 108448), (304, 67780), (320, 64391), (380, 54224), (608, 33890), (760, 27112), (1216, 16945), (1520, 13556), (3040, 6778), (3389, 6080)]