289009

素因数分解:

$7^1\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{53}}^1$

素因数の和:120

約数の個数: 16

約数和(自身を含む): 362880

約数和(自身を除く): 73871

約数列:

[1, 7, 19, 41, 53, 133, 287, 371, 779, 1007, 2173, 5453, 7049, 15211, 41287, 289009]

約数ペア:

[(1, 289009), (7, 41287), (19, 15211), (41, 7049), (53, 5453), (133, 2173), (287, 1007), (371, 779)]