20191171

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{877}}^1$

素因数の和:931

約数の個数: 32

約数和(自身を含む): 28320768

約数和(自身を除く): 8129597

約数列:

[1, 7, 11, 13, 23, 77, 91, 143, 161, 253, 299, 877, 1001, 1771, 2093, 3289, 6139, 9647, 11401, 20171, 23023, 67529, 79807, 125411, 141197, 221881, 262223, 877877, 1553167, 1835561, 2884453, 20191171]

約数ペア:

[(1, 20191171), (7, 2884453), (11, 1835561), (13, 1553167), (23, 877877), (77, 262223), (91, 221881), (143, 141197), (161, 125411), (253, 79807), (299, 67529), (877, 23023), (1001, 20171), (1771, 11401), (2093, 9647), (3289, 6139)]