20618025

素因数分解:

$3^1\times 5^2\times {\mathrm{17}}^1\times {\mathrm{103}}^1\times {\mathrm{157}}^1$

素因数の和:290

約数の個数: 48

約数和(自身を含む): 36676224

約数和(自身を除く): 16058199

約数列:

[1, 3, 5, 15, 17, 25, 51, 75, 85, 103, 157, 255, 309, 425, 471, 515, 785, 1275, 1545, 1751, 2355, 2575, 2669, 3925, 5253, 7725, 8007, 8755, 11775, 13345, 16171, 26265, 40035, 43775, 48513, 66725, 80855, 131325, 200175, 242565, 274907, 404275, 824721, 1212825, 1374535, 4123605, 6872675, 20618025]

約数ペア:

[(1, 20618025), (3, 6872675), (5, 4123605), (15, 1374535), (17, 1212825), (25, 824721), (51, 404275), (75, 274907), (85, 242565), (103, 200175), (157, 131325), (255, 80855), (309, 66725), (425, 48513), (471, 43775), (515, 40035), (785, 26265), (1275, 16171), (1545, 13345), (1751, 11775), (2355, 8755), (2575, 8007), (2669, 7725), (3925, 5253)]