21372957

素因数分解:

$3^3\times {\mathrm{23}}^1\times {\mathrm{127}}^1\times {\mathrm{271}}^1$

素因数の和:430

約数の個数: 32

約数和(自身を含む): 33423360

約数和(自身を除く): 12050403

約数列:

[1, 3, 9, 23, 27, 69, 127, 207, 271, 381, 621, 813, 1143, 2439, 2921, 3429, 6233, 7317, 8763, 18699, 26289, 34417, 56097, 78867, 103251, 168291, 309753, 791591, 929259, 2374773, 7124319, 21372957]

約数ペア:

[(1, 21372957), (3, 7124319), (9, 2374773), (23, 929259), (27, 791591), (69, 309753), (127, 168291), (207, 103251), (271, 78867), (381, 56097), (621, 34417), (813, 26289), (1143, 18699), (2439, 8763), (2921, 7317), (3429, 6233)]