21375009

素因数分解:

$3^6\times {\mathrm{109}}^1\times {\mathrm{269}}^1$

素因数の和:396

約数の個数: 28

約数和(自身を含む): 32462100

約数和(自身を除く): 11087091

約数列:

[1, 3, 9, 27, 81, 109, 243, 269, 327, 729, 807, 981, 2421, 2943, 7263, 8829, 21789, 26487, 29321, 65367, 79461, 87963, 196101, 263889, 791667, 2375001, 7125003, 21375009]

約数ペア:

[(1, 21375009), (3, 7125003), (9, 2375001), (27, 791667), (81, 263889), (109, 196101), (243, 87963), (269, 79461), (327, 65367), (729, 29321), (807, 26487), (981, 21789), (2421, 8829), (2943, 7263)]