1880221

素因数分解:

$7^1\times {\mathrm{19}}^1\times {\mathrm{67}}^1\times {\mathrm{211}}^1$

素因数の和:304

約数の個数: 16

約数和(自身を含む): 2306560

約数和(自身を除く): 426339

約数列:

[1, 7, 19, 67, 133, 211, 469, 1273, 1477, 4009, 8911, 14137, 28063, 98959, 268603, 1880221]

約数ペア:

[(1, 1880221), (7, 268603), (19, 98959), (67, 28063), (133, 14137), (211, 8911), (469, 4009), (1273, 1477)]