20479347

素因数分解:

$3^2\times 7^1\times {\mathrm{61}}^1\times {\mathrm{73}}^2$

素因数の和:220

約数の個数: 36

約数和(自身を含む): 34838544

約数和(自身を除く): 14359197

約数列:

[1, 3, 7, 9, 21, 61, 63, 73, 183, 219, 427, 511, 549, 657, 1281, 1533, 3843, 4453, 4599, 5329, 13359, 15987, 31171, 37303, 40077, 47961, 93513, 111909, 280539, 325069, 335727, 975207, 2275483, 2925621, 6826449, 20479347]

約数ペア:

[(1, 20479347), (3, 6826449), (7, 2925621), (9, 2275483), (21, 975207), (61, 335727), (63, 325069), (73, 280539), (183, 111909), (219, 93513), (427, 47961), (511, 40077), (549, 37303), (657, 31171), (1281, 15987), (1533, 13359), (3843, 5329), (4453, 4599)]