21293818

素因数分解:

$2^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{79}}^1\times {\mathrm{1481}}^1$

素因数の和:1582

約数の個数: 32

約数和(自身を含む): 39836160

約数和(自身を除く): 18542342

約数列:

[1, 2, 7, 13, 14, 26, 79, 91, 158, 182, 553, 1027, 1106, 1481, 2054, 2962, 7189, 10367, 14378, 19253, 20734, 38506, 116999, 134771, 233998, 269542, 818993, 1520987, 1637986, 3041974, 10646909, 21293818]

約数ペア:

[(1, 21293818), (2, 10646909), (7, 3041974), (13, 1637986), (14, 1520987), (26, 818993), (79, 269542), (91, 233998), (158, 134771), (182, 116999), (553, 38506), (1027, 20734), (1106, 19253), (1481, 14378), (2054, 10367), (2962, 7189)]