27378981

素因数分解:

$3^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{89}}^1\times {\mathrm{257}}^1$

素因数の和:378

約数の個数: 48

約数和(自身を含む): 48297600

約数和(自身を除く): 20918619

約数列:

[1, 3, 7, 9, 19, 21, 57, 63, 89, 133, 171, 257, 267, 399, 623, 771, 801, 1197, 1691, 1799, 1869, 2313, 4883, 5073, 5397, 5607, 11837, 14649, 15219, 16191, 22873, 34181, 35511, 43947, 68619, 102543, 106533, 160111, 205857, 307629, 434587, 480333, 1303761, 1440999, 3042109, 3911283, 9126327, 27378981]

約数ペア:

[(1, 27378981), (3, 9126327), (7, 3911283), (9, 3042109), (19, 1440999), (21, 1303761), (57, 480333), (63, 434587), (89, 307629), (133, 205857), (171, 160111), (257, 106533), (267, 102543), (399, 68619), (623, 43947), (771, 35511), (801, 34181), (1197, 22873), (1691, 16191), (1799, 15219), (1869, 14649), (2313, 11837), (4883, 5607), (5073, 5397)]