638741824

素因数分解:

$2^6\times 7^1\times {\mathrm{73}}^1\times {\mathrm{19531}}^1$

素因数の和:19623

約数の個数: 56

約数和(自身を含む): 1468493888

約数和(自身を除く): 829752064

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 32, 56, 64, 73, 112, 146, 224, 292, 448, 511, 584, 1022, 1168, 2044, 2336, 4088, 4672, 8176, 16352, 19531, 32704, 39062, 78124, 136717, 156248, 273434, 312496, 546868, 624992, 1093736, 1249984, 1425763, 2187472, 2851526, 4374944, 5703052, 8749888, 9980341, 11406104, 19960682, 22812208, 39921364, 45624416, 79842728, 91248832, 159685456, 319370912, 638741824]

約数ペア:

[(1, 638741824), (2, 319370912), (4, 159685456), (7, 91248832), (8, 79842728), (14, 45624416), (16, 39921364), (28, 22812208), (32, 19960682), (56, 11406104), (64, 9980341), (73, 8749888), (112, 5703052), (146, 4374944), (224, 2851526), (292, 2187472), (448, 1425763), (511, 1249984), (584, 1093736), (1022, 624992), (1168, 546868), (2044, 312496), (2336, 273434), (4088, 156248), (4672, 136717), (8176, 78124), (16352, 39062), (19531, 32704)]