20211196159

素因数分解:

$7^2\times {\mathrm{11}}^2\times {\mathrm{97}}^1\times {\mathrm{113}}^1\times {\mathrm{311}}^1$

素因数の和:557

約数の個数: 72

約数和(自身を含む): 26424818784

約数和(自身を除く): 6213622625

約数列:

[1, 7, 11, 49, 77, 97, 113, 121, 311, 539, 679, 791, 847, 1067, 1243, 2177, 3421, 4753, 5537, 5929, 7469, 8701, 10961, 11737, 13673, 15239, 23947, 30167, 35143, 37631, 52283, 60907, 76727, 82159, 95711, 120571, 167629, 211169, 246001, 263417, 331837, 386573, 537089, 575113, 669977, 843997, 1326281, 1478183, 1722007, 1843919, 2322859, 2706011, 3408871, 3650207, 4252303, 5907979, 9283967, 16260013, 18942077, 23862097, 25551449, 29766121, 37497581, 64987769, 167034679, 178860143, 208362847, 262483067, 412473391, 1837381469, 2887313737, 20211196159]

約数ペア:

[(1, 20211196159), (7, 2887313737), (11, 1837381469), (49, 412473391), (77, 262483067), (97, 208362847), (113, 178860143), (121, 167034679), (311, 64987769), (539, 37497581), (679, 29766121), (791, 25551449), (847, 23862097), (1067, 18942077), (1243, 16260013), (2177, 9283967), (3421, 5907979), (4753, 4252303), (5537, 3650207), (5929, 3408871), (7469, 2706011), (8701, 2322859), (10961, 1843919), (11737, 1722007), (13673, 1478183), (15239, 1326281), (23947, 843997), (30167, 669977), (35143, 575113), (37631, 537089), (52283, 386573), (60907, 331837), (76727, 263417), (82159, 246001), (95711, 211169), (120571, 167629)]