20905346

素因数分解:

$2^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{151}}^1$

素因数の和:231

約数の個数: 64

約数和(自身を含む): 42024960

約数和(自身を除く): 21119614

約数列:

[1, 2, 7, 11, 14, 22, 29, 31, 58, 62, 77, 151, 154, 203, 217, 302, 319, 341, 406, 434, 638, 682, 899, 1057, 1661, 1798, 2114, 2233, 2387, 3322, 4379, 4466, 4681, 4774, 6293, 8758, 9362, 9889, 11627, 12586, 19778, 23254, 30653, 32767, 48169, 51491, 61306, 65534, 69223, 96338, 102982, 135749, 138446, 271498, 337183, 360437, 674366, 720874, 950243, 1493239, 1900486, 2986478, 10452673, 20905346]

約数ペア:

[(1, 20905346), (2, 10452673), (7, 2986478), (11, 1900486), (14, 1493239), (22, 950243), (29, 720874), (31, 674366), (58, 360437), (62, 337183), (77, 271498), (151, 138446), (154, 135749), (203, 102982), (217, 96338), (302, 69223), (319, 65534), (341, 61306), (406, 51491), (434, 48169), (638, 32767), (682, 30653), (899, 23254), (1057, 19778), (1661, 12586), (1798, 11627), (2114, 9889), (2233, 9362), (2387, 8758), (3322, 6293), (4379, 4774), (4466, 4681)]