19842641

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{73}}^1\times {\mathrm{103}}^1$

素因数の和:225

約数の個数: 32

約数和(自身を含む): 25858560

約数和(自身を除く): 6015919

約数列:

[1, 7, 13, 29, 73, 91, 103, 203, 377, 511, 721, 949, 1339, 2117, 2639, 2987, 6643, 7519, 9373, 14819, 20909, 27521, 38831, 52633, 97747, 192647, 218051, 271817, 684229, 1526357, 2834663, 19842641]

約数ペア:

[(1, 19842641), (7, 2834663), (13, 1526357), (29, 684229), (73, 271817), (91, 218051), (103, 192647), (203, 97747), (377, 52633), (511, 38831), (721, 27521), (949, 20909), (1339, 14819), (2117, 9373), (2639, 7519), (2987, 6643)]