21993566

素因数分解:

$2^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{167}}^1\times {\mathrm{409}}^1$

素因数の和:608

約数の個数: 32

約数和(自身を含む): 39674880

約数和(自身を除く): 17681314

約数列:

[1, 2, 7, 14, 23, 46, 161, 167, 322, 334, 409, 818, 1169, 2338, 2863, 3841, 5726, 7682, 9407, 18814, 26887, 53774, 65849, 68303, 131698, 136606, 478121, 956242, 1570969, 3141938, 10996783, 21993566]

約数ペア:

[(1, 21993566), (2, 10996783), (7, 3141938), (14, 1570969), (23, 956242), (46, 478121), (161, 136606), (167, 131698), (322, 68303), (334, 65849), (409, 53774), (818, 26887), (1169, 18814), (2338, 9407), (2863, 7682), (3841, 5726)]