21203560

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{41}}^1\times {\mathrm{1847}}^1$

素因数の和:1906

約数の個数: 64

約数和(自身を含む): 55883520

約数和(自身を除く): 34679960

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 41, 56, 70, 82, 140, 164, 205, 280, 287, 328, 410, 574, 820, 1148, 1435, 1640, 1847, 2296, 2870, 3694, 5740, 7388, 9235, 11480, 12929, 14776, 18470, 25858, 36940, 51716, 64645, 73880, 75727, 103432, 129290, 151454, 258580, 302908, 378635, 517160, 530089, 605816, 757270, 1060178, 1514540, 2120356, 2650445, 3029080, 4240712, 5300890, 10601780, 21203560]

約数ペア:

[(1, 21203560), (2, 10601780), (4, 5300890), (5, 4240712), (7, 3029080), (8, 2650445), (10, 2120356), (14, 1514540), (20, 1060178), (28, 757270), (35, 605816), (40, 530089), (41, 517160), (56, 378635), (70, 302908), (82, 258580), (140, 151454), (164, 129290), (205, 103432), (280, 75727), (287, 73880), (328, 64645), (410, 51716), (574, 36940), (820, 25858), (1148, 18470), (1435, 14776), (1640, 12929), (1847, 11480), (2296, 9235), (2870, 7388), (3694, 5740)]