20569221

素因数分解:

$3^5\times {\mathrm{47}}^1\times {\mathrm{1801}}^1$

素因数の和:1863

約数の個数: 24

約数和(自身を含む): 31484544

約数和(自身を除く): 10915323

約数列:

[1, 3, 9, 27, 47, 81, 141, 243, 423, 1269, 1801, 3807, 5403, 11421, 16209, 48627, 84647, 145881, 253941, 437643, 761823, 2285469, 6856407, 20569221]

約数ペア:

[(1, 20569221), (3, 6856407), (9, 2285469), (27, 761823), (47, 437643), (81, 253941), (141, 145881), (243, 84647), (423, 48627), (1269, 16209), (1801, 11421), (3807, 5403)]