28638491

素因数分解:

$7^2\times {\mathrm{19}}^2\times {\mathrm{1619}}^1$

素因数の和:1671

約数の個数: 18

約数和(自身を含む): 35181540

約数和(自身を除く): 6543049

約数列:

[1, 7, 19, 49, 133, 361, 931, 1619, 2527, 11333, 17689, 30761, 79331, 215327, 584459, 1507289, 4091213, 28638491]

約数ペア:

[(1, 28638491), (7, 4091213), (19, 1507289), (49, 584459), (133, 215327), (361, 79331), (931, 30761), (1619, 17689), (2527, 11333)]