81997236

素因数分解:

$2^2\times 3^2\times {\mathrm{19}}^1\times {\mathrm{313}}^1\times {\mathrm{383}}^1$

素因数の和:725

約数の個数: 72

約数和(自身を含む): 219448320

約数和(自身を除く): 137451084

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 19, 36, 38, 57, 76, 114, 171, 228, 313, 342, 383, 626, 684, 766, 939, 1149, 1252, 1532, 1878, 2298, 2817, 3447, 3756, 4596, 5634, 5947, 6894, 7277, 11268, 11894, 13788, 14554, 17841, 21831, 23788, 29108, 35682, 43662, 53523, 65493, 71364, 87324, 107046, 119879, 130986, 214092, 239758, 261972, 359637, 479516, 719274, 1078911, 1438548, 2157822, 2277701, 4315644, 4555402, 6833103, 9110804, 13666206, 20499309, 27332412, 40998618, 81997236]

約数ペア:

[(1, 81997236), (2, 40998618), (3, 27332412), (4, 20499309), (6, 13666206), (9, 9110804), (12, 6833103), (18, 4555402), (19, 4315644), (36, 2277701), (38, 2157822), (57, 1438548), (76, 1078911), (114, 719274), (171, 479516), (228, 359637), (313, 261972), (342, 239758), (383, 214092), (626, 130986), (684, 119879), (766, 107046), (939, 87324), (1149, 71364), (1252, 65493), (1532, 53523), (1878, 43662), (2298, 35682), (2817, 29108), (3447, 23788), (3756, 21831), (4596, 17841), (5634, 14554), (5947, 13788), (6894, 11894), (7277, 11268)]