217872681

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{307}}^1\times {\mathrm{587}}^1$

素因数の和:941

約数の個数: 32

約数和(自身を含む): 324538368

約数和(自身を除く): 106665687

約数列:

[1, 3, 13, 31, 39, 93, 307, 403, 587, 921, 1209, 1761, 3991, 7631, 9517, 11973, 18197, 22893, 28551, 54591, 123721, 180209, 236561, 371163, 540627, 709683, 2342717, 5586479, 7028151, 16759437, 72624227, 217872681]

約数ペア:

[(1, 217872681), (3, 72624227), (13, 16759437), (31, 7028151), (39, 5586479), (93, 2342717), (307, 709683), (403, 540627), (587, 371163), (921, 236561), (1209, 180209), (1761, 123721), (3991, 54591), (7631, 28551), (9517, 22893), (11973, 18197)]