81972004

素因数分解:

$2^2\times {\mathrm{19}}^1\times {\mathrm{59}}^1\times {\mathrm{101}}^1\times {\mathrm{181}}^1$

素因数の和:364

約数の個数: 48

約数和(自身を含む): 155937600

約数和(自身を除く): 73965596

約数列:

[1, 2, 4, 19, 38, 59, 76, 101, 118, 181, 202, 236, 362, 404, 724, 1121, 1919, 2242, 3439, 3838, 4484, 5959, 6878, 7676, 10679, 11918, 13756, 18281, 21358, 23836, 36562, 42716, 73124, 113221, 202901, 226442, 347339, 405802, 452884, 694678, 811604, 1078579, 1389356, 2157158, 4314316, 20493001, 40986002, 81972004]

約数ペア:

[(1, 81972004), (2, 40986002), (4, 20493001), (19, 4314316), (38, 2157158), (59, 1389356), (76, 1078579), (101, 811604), (118, 694678), (181, 452884), (202, 405802), (236, 347339), (362, 226442), (404, 202901), (724, 113221), (1121, 73124), (1919, 42716), (2242, 36562), (3439, 23836), (3838, 21358), (4484, 18281), (5959, 13756), (6878, 11918), (7676, 10679)]