218428.00000000

素因数分解:

$5^3\times {\mathrm{11}}^1\times {\mathrm{19}}^2\times {\mathrm{41}}^1$

素因数の和:105

約数の個数: 48

約数和(自身を含む): 29955744

約数和(自身を除く): 9604369

約数列:

[1, 5, 11, 19, 25, 41, 55, 95, 125, 205, 209, 275, 361, 451, 475, 779, 1025, 1045, 1375, 1805, 2255, 2375, 3895, 3971, 5125, 5225, 8569, 9025, 11275, 14801, 19475, 19855, 26125, 42845, 45125, 56375, 74005, 97375, 99275, 162811, 214225, 370025, 496375, 814055, 1071125, 1850125, 4070275, 20351375]

約数ペア:

[(1, 20351375), (5, 4070275), (11, 1850125), (19, 1071125), (25, 814055), (41, 496375), (55, 370025), (95, 214225), (125, 162811), (205, 99275), (209, 97375), (275, 74005), (361, 56375), (451, 45125), (475, 42845), (779, 26125), (1025, 19855), (1045, 19475), (1375, 14801), (1805, 11275), (2255, 9025), (2375, 8569), (3895, 5225), (3971, 5125)]