21359338

素因数分解:

$2^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{227}}^1$

素因数の和:307

約数の個数: 64

約数和(自身を含む): 44126208

約数和(自身を除く): 22766870

約数列:

[1, 2, 7, 11, 13, 14, 22, 26, 47, 77, 91, 94, 143, 154, 182, 227, 286, 329, 454, 517, 611, 658, 1001, 1034, 1222, 1589, 2002, 2497, 2951, 3178, 3619, 4277, 4994, 5902, 6721, 7238, 8554, 10669, 13442, 17479, 20657, 21338, 32461, 34958, 41314, 47047, 64922, 74683, 94094, 117359, 138697, 149366, 227227, 234718, 277394, 454454, 821513, 970879, 1525667, 1643026, 1941758, 3051334, 10679669, 21359338]

約数ペア:

[(1, 21359338), (2, 10679669), (7, 3051334), (11, 1941758), (13, 1643026), (14, 1525667), (22, 970879), (26, 821513), (47, 454454), (77, 277394), (91, 234718), (94, 227227), (143, 149366), (154, 138697), (182, 117359), (227, 94094), (286, 74683), (329, 64922), (454, 47047), (517, 41314), (611, 34958), (658, 32461), (1001, 21338), (1034, 20657), (1222, 17479), (1589, 13442), (2002, 10669), (2497, 8554), (2951, 7238), (3178, 6721), (3619, 5902), (4277, 4994)]