21439792

素因数分解:

$2^4\times {\mathrm{11}}^1\times {\mathrm{61}}^1\times {\mathrm{1997}}^1$

素因数の和:2077

約数の個数: 40

約数和(自身を含む): 46081872

約数和(自身を除く): 24642080

約数列:

[1, 2, 4, 8, 11, 16, 22, 44, 61, 88, 122, 176, 244, 488, 671, 976, 1342, 1997, 2684, 3994, 5368, 7988, 10736, 15976, 21967, 31952, 43934, 87868, 121817, 175736, 243634, 351472, 487268, 974536, 1339987, 1949072, 2679974, 5359948, 10719896, 21439792]

約数ペア:

[(1, 21439792), (2, 10719896), (4, 5359948), (8, 2679974), (11, 1949072), (16, 1339987), (22, 974536), (44, 487268), (61, 351472), (88, 243634), (122, 175736), (176, 121817), (244, 87868), (488, 43934), (671, 31952), (976, 21967), (1342, 15976), (1997, 10736), (2684, 7988), (3994, 5368)]