20962887

素因数分解:

$3^1\times {\mathrm{11}}^2\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{79}}^1$

素因数の和:164

約数の個数: 48

約数和(自身を含む): 33707520

約数和(自身を除く): 12744633

約数列:

[1, 3, 11, 17, 33, 43, 51, 79, 121, 129, 187, 237, 363, 473, 561, 731, 869, 1343, 1419, 2057, 2193, 2607, 3397, 4029, 5203, 6171, 8041, 9559, 10191, 14773, 15609, 24123, 28677, 37367, 44319, 57749, 88451, 112101, 162503, 173247, 265353, 411037, 487509, 635239, 1233111, 1905717, 6987629, 20962887]

約数ペア:

[(1, 20962887), (3, 6987629), (11, 1905717), (17, 1233111), (33, 635239), (43, 487509), (51, 411037), (79, 265353), (121, 173247), (129, 162503), (187, 112101), (237, 88451), (363, 57749), (473, 44319), (561, 37367), (731, 28677), (869, 24123), (1343, 15609), (1419, 14773), (2057, 10191), (2193, 9559), (2607, 8041), (3397, 6171), (4029, 5203)]