18889983

素因数分解:

$3^3\times 7^1\times {\mathrm{89}}^1\times {\mathrm{1123}}^1$

素因数の和:1228

約数の個数: 32

約数和(自身を含む): 32371200

約数和(自身を除く): 13481217

約数列:

[1, 3, 7, 9, 21, 27, 63, 89, 189, 267, 623, 801, 1123, 1869, 2403, 3369, 5607, 7861, 10107, 16821, 23583, 30321, 70749, 99947, 212247, 299841, 699629, 899523, 2098887, 2698569, 6296661, 18889983]

約数ペア:

[(1, 18889983), (3, 6296661), (7, 2698569), (9, 2098887), (21, 899523), (27, 699629), (63, 299841), (89, 212247), (189, 99947), (267, 70749), (623, 30321), (801, 23583), (1123, 16821), (1869, 10107), (2403, 7861), (3369, 5607)]