21299988

素因数分解:

$2^2\times 3^1\times {\mathrm{19}}^1\times {\mathrm{103}}^1\times {\mathrm{907}}^1$

素因数の和:1036

約数の個数: 48

約数和(自身を含む): 52881920

約数和(自身を除く): 31581932

約数列:

[1, 2, 3, 4, 6, 12, 19, 38, 57, 76, 103, 114, 206, 228, 309, 412, 618, 907, 1236, 1814, 1957, 2721, 3628, 3914, 5442, 5871, 7828, 10884, 11742, 17233, 23484, 34466, 51699, 68932, 93421, 103398, 186842, 206796, 280263, 373684, 560526, 1121052, 1774999, 3549998, 5324997, 7099996, 10649994, 21299988]

約数ペア:

[(1, 21299988), (2, 10649994), (3, 7099996), (4, 5324997), (6, 3549998), (12, 1774999), (19, 1121052), (38, 560526), (57, 373684), (76, 280263), (103, 206796), (114, 186842), (206, 103398), (228, 93421), (309, 68932), (412, 51699), (618, 34466), (907, 23484), (1236, 17233), (1814, 11742), (1957, 10884), (2721, 7828), (3628, 5871), (3914, 5442)]