20622368

素因数分解:

$2^5\times {\mathrm{13}}^1\times {\mathrm{89}}^1\times {\mathrm{557}}^1$

素因数の和:669

約数の個数: 48

約数和(自身を含む): 44294040

約数和(自身を除く): 23671672

約数列:

[1, 2, 4, 8, 13, 16, 26, 32, 52, 89, 104, 178, 208, 356, 416, 557, 712, 1114, 1157, 1424, 2228, 2314, 2848, 4456, 4628, 7241, 8912, 9256, 14482, 17824, 18512, 28964, 37024, 49573, 57928, 99146, 115856, 198292, 231712, 396584, 644449, 793168, 1288898, 1586336, 2577796, 5155592, 10311184, 20622368]

約数ペア:

[(1, 20622368), (2, 10311184), (4, 5155592), (8, 2577796), (13, 1586336), (16, 1288898), (26, 793168), (32, 644449), (52, 396584), (89, 231712), (104, 198292), (178, 115856), (208, 99146), (356, 57928), (416, 49573), (557, 37024), (712, 28964), (1114, 18512), (1157, 17824), (1424, 14482), (2228, 9256), (2314, 8912), (2848, 7241), (4456, 4628)]