20719719

素因数分解:

$3^4\times {\mathrm{17}}^1\times {\mathrm{41}}^1\times {\mathrm{367}}^1$

素因数の和:437

約数の個数: 40

約数和(自身を含む): 33663168

約数和(自身を除く): 12943449

約数列:

[1, 3, 9, 17, 27, 41, 51, 81, 123, 153, 367, 369, 459, 697, 1101, 1107, 1377, 2091, 3303, 3321, 6239, 6273, 9909, 15047, 18717, 18819, 29727, 45141, 56151, 56457, 135423, 168453, 255799, 406269, 505359, 767397, 1218807, 2302191, 6906573, 20719719]

約数ペア:

[(1, 20719719), (3, 6906573), (9, 2302191), (17, 1218807), (27, 767397), (41, 505359), (51, 406269), (81, 255799), (123, 168453), (153, 135423), (367, 56457), (369, 56151), (459, 45141), (697, 29727), (1101, 18819), (1107, 18717), (1377, 15047), (2091, 9909), (3303, 6273), (3321, 6239)]