389675480

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{237607}}^1$

素因数の和:237659

約数の個数: 32

約数和(自身を含む): 898158240

約数和(自身を除く): 508482760

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 82, 164, 205, 328, 410, 820, 1640, 237607, 475214, 950428, 1188035, 1900856, 2376070, 4752140, 9504280, 9741887, 19483774, 38967548, 48709435, 77935096, 97418870, 194837740, 389675480]

約数ペア:

[(1, 389675480), (2, 194837740), (4, 97418870), (5, 77935096), (8, 48709435), (10, 38967548), (20, 19483774), (40, 9741887), (41, 9504280), (82, 4752140), (164, 2376070), (205, 1900856), (328, 1188035), (410, 950428), (820, 475214), (1640, 237607)]