1781420020

素因数分解:

$2^2\times 5^1\times {\mathrm{103}}^1\times {\mathrm{499}}^1\times {\mathrm{1733}}^1$

素因数の和:2344

約数の個数: 48

約数和(自身を含む): 3787056000

約数和(自身を除く): 2005635980

約数列:

[1, 2, 4, 5, 10, 20, 103, 206, 412, 499, 515, 998, 1030, 1733, 1996, 2060, 2495, 3466, 4990, 6932, 8665, 9980, 17330, 34660, 51397, 102794, 178499, 205588, 256985, 356998, 513970, 713996, 864767, 892495, 1027940, 1729534, 1784990, 3459068, 3569980, 4323835, 8647670, 17295340, 89071001, 178142002, 356284004, 445355005, 890710010, 1781420020]

約数ペア:

[(1, 1781420020), (2, 890710010), (4, 445355005), (5, 356284004), (10, 178142002), (20, 89071001), (103, 17295340), (206, 8647670), (412, 4323835), (499, 3569980), (515, 3459068), (998, 1784990), (1030, 1729534), (1733, 1027940), (1996, 892495), (2060, 864767), (2495, 713996), (3466, 513970), (4990, 356998), (6932, 256985), (8665, 205588), (9980, 178499), (17330, 102794), (34660, 51397)]