71640009

素因数分解:

$3^2\times 7^3\times {\mathrm{23}}^1\times {\mathrm{1009}}^1$

素因数の和:1059

約数の個数: 48

約数和(自身を含む): 126048000

約数和(自身を除く): 54407991

約数列:

[1, 3, 7, 9, 21, 23, 49, 63, 69, 147, 161, 207, 343, 441, 483, 1009, 1029, 1127, 1449, 3027, 3087, 3381, 7063, 7889, 9081, 10143, 21189, 23207, 23667, 49441, 63567, 69621, 71001, 148323, 162449, 208863, 346087, 444969, 487347, 1038261, 1137143, 1462041, 3114783, 3411429, 7960001, 10234287, 23880003, 71640009]

約数ペア:

[(1, 71640009), (3, 23880003), (7, 10234287), (9, 7960001), (21, 3411429), (23, 3114783), (49, 1462041), (63, 1137143), (69, 1038261), (147, 487347), (161, 444969), (207, 346087), (343, 208863), (441, 162449), (483, 148323), (1009, 71001), (1029, 69621), (1127, 63567), (1449, 49441), (3027, 23667), (3087, 23207), (3381, 21189), (7063, 10143), (7889, 9081)]