20687617917

素因数分解:

$3^3\times {\mathrm{17}}^2\times {\mathrm{2651239}}^1$

素因数の和:2651282

約数の個数: 24

約数和(自身を含む): 32557227200

約数和(自身を除く): 11869609283

約数列:

[1, 3, 9, 17, 27, 51, 153, 289, 459, 867, 2601, 7803, 2651239, 7953717, 23861151, 45071063, 71583453, 135213189, 405639567, 766208071, 1216918701, 2298624213, 6895872639, 20687617917]

約数ペア:

[(1, 20687617917), (3, 6895872639), (9, 2298624213), (17, 1216918701), (27, 766208071), (51, 405639567), (153, 135213189), (289, 71583453), (459, 45071063), (867, 23861151), (2601, 7953717), (7803, 2651239)]