21789027

素因数分解:

$3^3\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{2699}}^1$

素因数の和:2744

約数の個数: 32

約数和(自身を含む): 36288000

約数和(自身を除く): 14498973

約数列:

[1, 3, 9, 13, 23, 27, 39, 69, 117, 207, 299, 351, 621, 897, 2691, 2699, 8073, 8097, 24291, 35087, 62077, 72873, 105261, 186231, 315783, 558693, 807001, 947349, 1676079, 2421003, 7263009, 21789027]

約数ペア:

[(1, 21789027), (3, 7263009), (9, 2421003), (13, 1676079), (23, 947349), (27, 807001), (39, 558693), (69, 315783), (117, 186231), (207, 105261), (299, 72873), (351, 62077), (621, 35087), (897, 24291), (2691, 8097), (2699, 8073)]