21816949

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{97}}^1\times {\mathrm{127}}^1$

素因数の和:265

約数の個数: 32

約数和(自身を含む): 28901376

約数和(自身を除く): 7084427

約数列:

[1, 7, 11, 23, 77, 97, 127, 161, 253, 679, 889, 1067, 1397, 1771, 2231, 2921, 7469, 9779, 12319, 15617, 20447, 24541, 32131, 86233, 135509, 171787, 224917, 283337, 948563, 1983359, 3116707, 21816949]

約数ペア:

[(1, 21816949), (7, 3116707), (11, 1983359), (23, 948563), (77, 283337), (97, 224917), (127, 171787), (161, 135509), (253, 86233), (679, 32131), (889, 24541), (1067, 20447), (1397, 15617), (1771, 12319), (2231, 9779), (2921, 7469)]