20954451

素因数分解:

$3^1\times 7^1\times {\mathrm{53}}^1\times {\mathrm{67}}^1\times {\mathrm{281}}^1$

素因数の和:411

約数の個数: 32

約数和(自身を含む): 33136128

約数和(自身を除く): 12181677

約数列:

[1, 3, 7, 21, 53, 67, 159, 201, 281, 371, 469, 843, 1113, 1407, 1967, 3551, 5901, 10653, 14893, 18827, 24857, 44679, 56481, 74571, 104251, 131789, 312753, 395367, 997831, 2993493, 6984817, 20954451]

約数ペア:

[(1, 20954451), (3, 6984817), (7, 2993493), (21, 997831), (53, 395367), (67, 312753), (159, 131789), (201, 104251), (281, 74571), (371, 56481), (469, 44679), (843, 24857), (1113, 18827), (1407, 14893), (1967, 10653), (3551, 5901)]