18798668

素因数分解:

$2^2\times 7^1\times {\mathrm{17}}^1\times {\mathrm{73}}^1\times {\mathrm{541}}^1$

素因数の和:642

約数の個数: 48

約数和(自身を含む): 40428864

約数和(自身を除く): 21630196

約数列:

[1, 2, 4, 7, 14, 17, 28, 34, 68, 73, 119, 146, 238, 292, 476, 511, 541, 1022, 1082, 1241, 2044, 2164, 2482, 3787, 4964, 7574, 8687, 9197, 15148, 17374, 18394, 34748, 36788, 39493, 64379, 78986, 128758, 157972, 257516, 276451, 552902, 671381, 1105804, 1342762, 2685524, 4699667, 9399334, 18798668]

約数ペア:

[(1, 18798668), (2, 9399334), (4, 4699667), (7, 2685524), (14, 1342762), (17, 1105804), (28, 671381), (34, 552902), (68, 276451), (73, 257516), (119, 157972), (146, 128758), (238, 78986), (292, 64379), (476, 39493), (511, 36788), (541, 34748), (1022, 18394), (1082, 17374), (1241, 15148), (2044, 9197), (2164, 8687), (2482, 7574), (3787, 4964)]