78904021

素因数分解:

$7^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{73}}^1\times {\mathrm{293}}^1$

素因数の和:421

約数の個数: 32

約数和(自身を含む): 100251648

約数和(自身を除く): 21347627

約数列:

[1, 7, 17, 31, 73, 119, 217, 293, 511, 527, 1241, 2051, 2263, 3689, 4981, 8687, 9083, 15841, 21389, 34867, 38471, 63581, 149723, 154411, 269297, 363613, 663059, 1080877, 2545291, 4641413, 11272003, 78904021]

約数ペア:

[(1, 78904021), (7, 11272003), (17, 4641413), (31, 2545291), (73, 1080877), (119, 663059), (217, 363613), (293, 269297), (511, 154411), (527, 149723), (1241, 63581), (2051, 38471), (2263, 34867), (3689, 21389), (4981, 15841), (8687, 9083)]