20505104

素因数分解:

$2^4\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{1823}}^1$

素因数の和:1887

約数の個数: 40

約数和(自身を含む): 42973440

約数和(自身を除く): 22468336

約数列:

[1, 2, 4, 8, 16, 19, 37, 38, 74, 76, 148, 152, 296, 304, 592, 703, 1406, 1823, 2812, 3646, 5624, 7292, 11248, 14584, 29168, 34637, 67451, 69274, 134902, 138548, 269804, 277096, 539608, 554192, 1079216, 1281569, 2563138, 5126276, 10252552, 20505104]

約数ペア:

[(1, 20505104), (2, 10252552), (4, 5126276), (8, 2563138), (16, 1281569), (19, 1079216), (37, 554192), (38, 539608), (74, 277096), (76, 269804), (148, 138548), (152, 134902), (296, 69274), (304, 67451), (592, 34637), (703, 29168), (1406, 14584), (1823, 11248), (2812, 7292), (3646, 5624)]