19711564

素因数分解:

$2^2\times {\mathrm{97}}^1\times {\mathrm{101}}^1\times {\mathrm{503}}^1$

素因数の和:705

約数の個数: 24

約数和(自身を含む): 35265888

約数和(自身を除く): 15554324

約数列:

[1, 2, 4, 97, 101, 194, 202, 388, 404, 503, 1006, 2012, 9797, 19594, 39188, 48791, 50803, 97582, 101606, 195164, 203212, 4927891, 9855782, 19711564]

約数ペア:

[(1, 19711564), (2, 9855782), (4, 4927891), (97, 203212), (101, 195164), (194, 101606), (202, 97582), (388, 50803), (404, 48791), (503, 39188), (1006, 19594), (2012, 9797)]