21194988

素因数分解:

$2^2\times 3^1\times {\mathrm{17}}^1\times {\mathrm{107}}^1\times {\mathrm{971}}^1$

素因数の和:1102

約数の個数: 48

約数和(自身を含む): 52907904

約数和(自身を除く): 31712916

約数列:

[1, 2, 3, 4, 6, 12, 17, 34, 51, 68, 102, 107, 204, 214, 321, 428, 642, 971, 1284, 1819, 1942, 2913, 3638, 3884, 5457, 5826, 7276, 10914, 11652, 16507, 21828, 33014, 49521, 66028, 99042, 103897, 198084, 207794, 311691, 415588, 623382, 1246764, 1766249, 3532498, 5298747, 7064996, 10597494, 21194988]

約数ペア:

[(1, 21194988), (2, 10597494), (3, 7064996), (4, 5298747), (6, 3532498), (12, 1766249), (17, 1246764), (34, 623382), (51, 415588), (68, 311691), (102, 207794), (107, 198084), (204, 103897), (214, 99042), (321, 66028), (428, 49521), (642, 33014), (971, 21828), (1284, 16507), (1819, 11652), (1942, 10914), (2913, 7276), (3638, 5826), (3884, 5457)]