20130957

素因数分解:

$3^3\times 7^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{421}}^1$

素因数の和:471

約数の個数: 64

約数和(自身を含む): 38891520

約数和(自身を除く): 18760563

約数列:

[1, 3, 7, 9, 11, 21, 23, 27, 33, 63, 69, 77, 99, 161, 189, 207, 231, 253, 297, 421, 483, 621, 693, 759, 1263, 1449, 1771, 2079, 2277, 2947, 3789, 4347, 4631, 5313, 6831, 8841, 9683, 11367, 13893, 15939, 26523, 29049, 32417, 41679, 47817, 67781, 79569, 87147, 97251, 106513, 125037, 203343, 261441, 291753, 319539, 610029, 745591, 875259, 958617, 1830087, 2236773, 2875851, 6710319, 20130957]

約数ペア:

[(1, 20130957), (3, 6710319), (7, 2875851), (9, 2236773), (11, 1830087), (21, 958617), (23, 875259), (27, 745591), (33, 610029), (63, 319539), (69, 291753), (77, 261441), (99, 203343), (161, 125037), (189, 106513), (207, 97251), (231, 87147), (253, 79569), (297, 67781), (421, 47817), (483, 41679), (621, 32417), (693, 29049), (759, 26523), (1263, 15939), (1449, 13893), (1771, 11367), (2079, 9683), (2277, 8841), (2947, 6831), (3789, 5313), (4347, 4631)]