21101067

素因数分解:

$3^4\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{691}}^1$

素因数の和:745

約数の個数: 40

約数和(自身を含む): 35167440

約数和(自身を除く): 14066373

約数列:

[1, 3, 9, 13, 27, 29, 39, 81, 87, 117, 261, 351, 377, 691, 783, 1053, 1131, 2073, 2349, 3393, 6219, 8983, 10179, 18657, 20039, 26949, 30537, 55971, 60117, 80847, 180351, 242541, 260507, 541053, 727623, 781521, 1623159, 2344563, 7033689, 21101067]

約数ペア:

[(1, 21101067), (3, 7033689), (9, 2344563), (13, 1623159), (27, 781521), (29, 727623), (39, 541053), (81, 260507), (87, 242541), (117, 180351), (261, 80847), (351, 60117), (377, 55971), (691, 30537), (783, 26949), (1053, 20039), (1131, 18657), (2073, 10179), (2349, 8983), (3393, 6219)]