21392511

素因数分解:

$3^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{1933}}^1$

素因数の和:1991

約数の個数: 32

約数和(自身を含む): 35647488

約数和(自身を除く): 14254977

約数列:

[1, 3, 7, 17, 21, 31, 51, 93, 119, 217, 357, 527, 651, 1581, 1933, 3689, 5799, 11067, 13531, 32861, 40593, 59923, 98583, 179769, 230027, 419461, 690081, 1018691, 1258383, 3056073, 7130837, 21392511]

約数ペア:

[(1, 21392511), (3, 7130837), (7, 3056073), (17, 1258383), (21, 1018691), (31, 690081), (51, 419461), (93, 230027), (119, 179769), (217, 98583), (357, 59923), (527, 40593), (651, 32861), (1581, 13531), (1933, 11067), (3689, 5799)]