21604648

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{293}}^1\times {\mathrm{709}}^1$

素因数の和:1021

約数の個数: 32

約数和(自身を含む): 43835400

約数和(自身を除く): 22230752

約数列:

[1, 2, 4, 8, 13, 26, 52, 104, 293, 586, 709, 1172, 1418, 2344, 2836, 3809, 5672, 7618, 9217, 15236, 18434, 30472, 36868, 73736, 207737, 415474, 830948, 1661896, 2700581, 5401162, 10802324, 21604648]

約数ペア:

[(1, 21604648), (2, 10802324), (4, 5401162), (8, 2700581), (13, 1661896), (26, 830948), (52, 415474), (104, 207737), (293, 73736), (586, 36868), (709, 30472), (1172, 18434), (1418, 15236), (2344, 9217), (2836, 7618), (3809, 5672)]