19884970

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{4001}}^1$

素因数の和:4086

約数の個数: 32

約数和(自身を含む): 41492736

約数和(自身を除く): 21607766

約数列:

[1, 2, 5, 7, 10, 14, 35, 70, 71, 142, 355, 497, 710, 994, 2485, 4001, 4970, 8002, 20005, 28007, 40010, 56014, 140035, 280070, 284071, 568142, 1420355, 1988497, 2840710, 3976994, 9942485, 19884970]

約数ペア:

[(1, 19884970), (2, 9942485), (5, 3976994), (7, 2840710), (10, 1988497), (14, 1420355), (35, 568142), (70, 284071), (71, 280070), (142, 140035), (355, 56014), (497, 40010), (710, 28007), (994, 20005), (2485, 8002), (4001, 4970)]