21316005

素因数分解:

$3^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{107}}^1\times {\mathrm{233}}^1$

素因数の和:370

約数の個数: 48

約数和(自身を含む): 39424320

約数和(自身を除く): 18108315

約数列:

[1, 3, 5, 9, 15, 19, 45, 57, 95, 107, 171, 233, 285, 321, 535, 699, 855, 963, 1165, 1605, 2033, 2097, 3495, 4427, 4815, 6099, 10165, 10485, 13281, 18297, 22135, 24931, 30495, 39843, 66405, 74793, 91485, 124655, 199215, 224379, 373965, 473689, 1121895, 1421067, 2368445, 4263201, 7105335, 21316005]

約数ペア:

[(1, 21316005), (3, 7105335), (5, 4263201), (9, 2368445), (15, 1421067), (19, 1121895), (45, 473689), (57, 373965), (95, 224379), (107, 199215), (171, 124655), (233, 91485), (285, 74793), (321, 66405), (535, 39843), (699, 30495), (855, 24931), (963, 22135), (1165, 18297), (1605, 13281), (2033, 10485), (2097, 10165), (3495, 6099), (4427, 4815)]