18815776

素因数分解:

$2^5\times 7^1\times {\mathrm{19}}^1\times {\mathrm{4421}}^1$

素因数の和:4457

約数の個数: 48

約数和(自身を含む): 44573760

約数和(自身を除く): 25757984

約数列:

[1, 2, 4, 7, 8, 14, 16, 19, 28, 32, 38, 56, 76, 112, 133, 152, 224, 266, 304, 532, 608, 1064, 2128, 4256, 4421, 8842, 17684, 30947, 35368, 61894, 70736, 83999, 123788, 141472, 167998, 247576, 335996, 495152, 587993, 671992, 990304, 1175986, 1343984, 2351972, 2687968, 4703944, 9407888, 18815776]

約数ペア:

[(1, 18815776), (2, 9407888), (4, 4703944), (7, 2687968), (8, 2351972), (14, 1343984), (16, 1175986), (19, 990304), (28, 671992), (32, 587993), (38, 495152), (56, 335996), (76, 247576), (112, 167998), (133, 141472), (152, 123788), (224, 83999), (266, 70736), (304, 61894), (532, 35368), (608, 30947), (1064, 17684), (2128, 8842), (4256, 4421)]