2638814920

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{139}}^1\times {\mathrm{67801}}^1$

素因数の和:67958

約数の個数: 64

約数和(自身を含む): 6834441600

約数和(自身を除く): 4195626680

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 139, 140, 278, 280, 556, 695, 973, 1112, 1390, 1946, 2780, 3892, 4865, 5560, 7784, 9730, 19460, 38920, 67801, 135602, 271204, 339005, 474607, 542408, 678010, 949214, 1356020, 1898428, 2373035, 2712040, 3796856, 4746070, 9424339, 9492140, 18848678, 18984280, 37697356, 47121695, 65970373, 75394712, 94243390, 131940746, 188486780, 263881492, 329851865, 376973560, 527762984, 659703730, 1319407460, 2638814920]

約数ペア:

[(1, 2638814920), (2, 1319407460), (4, 659703730), (5, 527762984), (7, 376973560), (8, 329851865), (10, 263881492), (14, 188486780), (20, 131940746), (28, 94243390), (35, 75394712), (40, 65970373), (56, 47121695), (70, 37697356), (139, 18984280), (140, 18848678), (278, 9492140), (280, 9424339), (556, 4746070), (695, 3796856), (973, 2712040), (1112, 2373035), (1390, 1898428), (1946, 1356020), (2780, 949214), (3892, 678010), (4865, 542408), (5560, 474607), (7784, 339005), (9730, 271204), (19460, 135602), (38920, 67801)]