20668998

素因数分解:

$2^1\times 3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{59}}^1\times {\mathrm{439}}^1$

素因数の和:529

約数の個数: 64

約数和(自身を含む): 50688000

約数和(自身を除く): 30019002

約数列:

[1, 2, 3, 6, 7, 14, 19, 21, 38, 42, 57, 59, 114, 118, 133, 177, 266, 354, 399, 413, 439, 798, 826, 878, 1121, 1239, 1317, 2242, 2478, 2634, 3073, 3363, 6146, 6726, 7847, 8341, 9219, 15694, 16682, 18438, 23541, 25023, 25901, 47082, 50046, 51802, 58387, 77703, 116774, 155406, 175161, 181307, 350322, 362614, 492119, 543921, 984238, 1087842, 1476357, 2952714, 3444833, 6889666, 10334499, 20668998]

約数ペア:

[(1, 20668998), (2, 10334499), (3, 6889666), (6, 3444833), (7, 2952714), (14, 1476357), (19, 1087842), (21, 984238), (38, 543921), (42, 492119), (57, 362614), (59, 350322), (114, 181307), (118, 175161), (133, 155406), (177, 116774), (266, 77703), (354, 58387), (399, 51802), (413, 50046), (439, 47082), (798, 25901), (826, 25023), (878, 23541), (1121, 18438), (1239, 16682), (1317, 15694), (2242, 9219), (2478, 8341), (2634, 7847), (3073, 6726), (3363, 6146)]