278317089

素因数分解:

$3^2\times {\mathrm{23}}^1\times {\mathrm{29}}^1\times {\mathrm{71}}^1\times {\mathrm{653}}^1$

素因数の和:782

約数の個数: 48

約数和(自身を含む): 440743680

約数和(自身を除く): 162426591

約数列:

[1, 3, 9, 23, 29, 69, 71, 87, 207, 213, 261, 639, 653, 667, 1633, 1959, 2001, 2059, 4899, 5877, 6003, 6177, 14697, 15019, 18531, 18937, 45057, 46363, 47357, 56811, 135171, 139089, 142071, 170433, 417267, 426213, 435551, 1066349, 1306653, 1344527, 3199047, 3919959, 4033581, 9597141, 12100743, 30924121, 92772363, 278317089]

約数ペア:

[(1, 278317089), (3, 92772363), (9, 30924121), (23, 12100743), (29, 9597141), (69, 4033581), (71, 3919959), (87, 3199047), (207, 1344527), (213, 1306653), (261, 1066349), (639, 435551), (653, 426213), (667, 417267), (1633, 170433), (1959, 142071), (2001, 139089), (2059, 135171), (4899, 56811), (5877, 47357), (6003, 46363), (6177, 45057), (14697, 18937), (15019, 18531)]