21290192

素因数分解:

$2^4\times 7^1\times {\mathrm{11}}^2\times {\mathrm{1571}}^1$

素因数の和:1608

約数の個数: 60

約数和(自身を含む): 51850848

約数和(自身を除く): 30560656

約数列:

[1, 2, 4, 7, 8, 11, 14, 16, 22, 28, 44, 56, 77, 88, 112, 121, 154, 176, 242, 308, 484, 616, 847, 968, 1232, 1571, 1694, 1936, 3142, 3388, 6284, 6776, 10997, 12568, 13552, 17281, 21994, 25136, 34562, 43988, 69124, 87976, 120967, 138248, 175952, 190091, 241934, 276496, 380182, 483868, 760364, 967736, 1330637, 1520728, 1935472, 2661274, 3041456, 5322548, 10645096, 21290192]

約数ペア:

[(1, 21290192), (2, 10645096), (4, 5322548), (7, 3041456), (8, 2661274), (11, 1935472), (14, 1520728), (16, 1330637), (22, 967736), (28, 760364), (44, 483868), (56, 380182), (77, 276496), (88, 241934), (112, 190091), (121, 175952), (154, 138248), (176, 120967), (242, 87976), (308, 69124), (484, 43988), (616, 34562), (847, 25136), (968, 21994), (1232, 17281), (1571, 13552), (1694, 12568), (1936, 10997), (3142, 6776), (3388, 6284)]