21351694

素因数分解:

$2^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{67}}^1\times {\mathrm{103}}^1$

素因数の和:209

約数の個数: 64

約数和(自身を含む): 42771456

約数和(自身を除く): 21419762

約数列:

[1, 2, 7, 13, 14, 17, 26, 34, 67, 91, 103, 119, 134, 182, 206, 221, 238, 442, 469, 721, 871, 938, 1139, 1339, 1442, 1547, 1742, 1751, 2278, 2678, 3094, 3502, 6097, 6901, 7973, 9373, 12194, 12257, 13802, 14807, 15946, 18746, 22763, 24514, 29614, 45526, 48307, 89713, 96614, 103649, 117317, 159341, 179426, 207298, 234634, 318682, 627991, 821219, 1255982, 1525121, 1642438, 3050242, 10675847, 21351694]

約数ペア:

[(1, 21351694), (2, 10675847), (7, 3050242), (13, 1642438), (14, 1525121), (17, 1255982), (26, 821219), (34, 627991), (67, 318682), (91, 234634), (103, 207298), (119, 179426), (134, 159341), (182, 117317), (206, 103649), (221, 96614), (238, 89713), (442, 48307), (469, 45526), (721, 29614), (871, 24514), (938, 22763), (1139, 18746), (1339, 15946), (1442, 14807), (1547, 13802), (1742, 12257), (1751, 12194), (2278, 9373), (2678, 7973), (3094, 6901), (3502, 6097)]