20511849

素因数分解:

$3^1\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{67}}^1\times {\mathrm{131}}^1$

素因数の和:261

約数の個数: 32

約数和(自身を含む): 30159360

約数和(自身を除く): 9647511

約数列:

[1, 3, 19, 41, 57, 67, 123, 131, 201, 393, 779, 1273, 2337, 2489, 2747, 3819, 5371, 7467, 8241, 8777, 16113, 26331, 52193, 102049, 156579, 166763, 306147, 359857, 500289, 1079571, 6837283, 20511849]

約数ペア:

[(1, 20511849), (3, 6837283), (19, 1079571), (41, 500289), (57, 359857), (67, 306147), (123, 166763), (131, 156579), (201, 102049), (393, 52193), (779, 26331), (1273, 16113), (2337, 8777), (2489, 8241), (2747, 7467), (3819, 5371)]