19915378

素因数分解:

$2^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{127}}^1\times {\mathrm{487}}^1$

素因数の和:646

約数の個数: 32

約数和(自身を含む): 35979264

約数和(自身を除く): 16063886

約数列:

[1, 2, 7, 14, 23, 46, 127, 161, 254, 322, 487, 889, 974, 1778, 2921, 3409, 5842, 6818, 11201, 20447, 22402, 40894, 61849, 78407, 123698, 156814, 432943, 865886, 1422527, 2845054, 9957689, 19915378]

約数ペア:

[(1, 19915378), (2, 9957689), (7, 2845054), (14, 1422527), (23, 865886), (46, 432943), (127, 156814), (161, 123698), (254, 78407), (322, 61849), (487, 40894), (889, 22402), (974, 20447), (1778, 11201), (2921, 6818), (3409, 5842)]