19912178

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{69623}}^1$

素因数の和:69649

約数の個数: 16

約数和(自身を含む): 35090496

約数和(自身を除く): 15178318

約数列:

[1, 2, 11, 13, 22, 26, 143, 286, 69623, 139246, 765853, 905099, 1531706, 1810198, 9956089, 19912178]

約数ペア:

[(1, 19912178), (2, 9956089), (11, 1810198), (13, 1531706), (22, 905099), (26, 765853), (143, 139246), (286, 69623)]