20198408840

素因数分解:

$2^3\times 5^1\times {\mathrm{1597}}^1\times {\mathrm{316193}}^1$

素因数の和:317801

約数の個数: 32

約数和(自身を含む): 45475021080

約数和(自身を除く): 25276612240

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 1597, 3194, 6388, 7985, 12776, 15970, 31940, 63880, 316193, 632386, 1264772, 1580965, 2529544, 3161930, 6323860, 12647720, 504960221, 1009920442, 2019840884, 2524801105, 4039681768, 5049602210, 10099204420, 20198408840]

約数ペア:

[(1, 20198408840), (2, 10099204420), (4, 5049602210), (5, 4039681768), (8, 2524801105), (10, 2019840884), (20, 1009920442), (40, 504960221), (1597, 12647720), (3194, 6323860), (6388, 3161930), (7985, 2529544), (12776, 1580965), (15970, 1264772), (31940, 632386), (63880, 316193)]