642313540

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{101}}^1\times {\mathrm{137}}^1\times {\mathrm{211}}^1$

素因数の和:469

約数の個数: 96

約数和(自身を含む): 1503992448

約数和(自身を除く): 861678908

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 101, 110, 137, 202, 211, 220, 274, 404, 422, 505, 548, 685, 844, 1010, 1055, 1111, 1370, 1507, 2020, 2110, 2222, 2321, 2740, 3014, 4220, 4444, 4642, 5555, 6028, 7535, 9284, 11110, 11605, 13837, 15070, 21311, 22220, 23210, 27674, 28907, 30140, 42622, 46420, 55348, 57814, 69185, 85244, 106555, 115628, 138370, 144535, 152207, 213110, 234421, 276740, 289070, 304414, 317977, 426220, 468842, 578140, 608828, 635954, 761035, 937684, 1172105, 1271908, 1522070, 1589885, 2344210, 2919607, 3044140, 3179770, 4688420, 5839214, 6359540, 11678428, 14598035, 29196070, 32115677, 58392140, 64231354, 128462708, 160578385, 321156770, 642313540]

約数ペア:

[(1, 642313540), (2, 321156770), (4, 160578385), (5, 128462708), (10, 64231354), (11, 58392140), (20, 32115677), (22, 29196070), (44, 14598035), (55, 11678428), (101, 6359540), (110, 5839214), (137, 4688420), (202, 3179770), (211, 3044140), (220, 2919607), (274, 2344210), (404, 1589885), (422, 1522070), (505, 1271908), (548, 1172105), (685, 937684), (844, 761035), (1010, 635954), (1055, 608828), (1111, 578140), (1370, 468842), (1507, 426220), (2020, 317977), (2110, 304414), (2222, 289070), (2321, 276740), (2740, 234421), (3014, 213110), (4220, 152207), (4444, 144535), (4642, 138370), (5555, 115628), (6028, 106555), (7535, 85244), (9284, 69185), (11110, 57814), (11605, 55348), (13837, 46420), (15070, 42622), (21311, 30140), (22220, 28907), (23210, 27674)]