20115718

素因数分解:

$2^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{47}}^1\times {\mathrm{1609}}^1$

素因数の和:1684

約数の個数: 32

約数和(自身を含む): 37094400

約数和(自身を除く): 16978682

約数列:

[1, 2, 7, 14, 19, 38, 47, 94, 133, 266, 329, 658, 893, 1609, 1786, 3218, 6251, 11263, 12502, 22526, 30571, 61142, 75623, 151246, 213997, 427994, 529361, 1058722, 1436837, 2873674, 10057859, 20115718]

約数ペア:

[(1, 20115718), (2, 10057859), (7, 2873674), (14, 1436837), (19, 1058722), (38, 529361), (47, 427994), (94, 213997), (133, 151246), (266, 75623), (329, 61142), (658, 30571), (893, 22526), (1609, 12502), (1786, 11263), (3218, 6251)]