21486147

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{53}}^1\times {\mathrm{7949}}^1$

素因数の和:8022

約数の個数: 16

約数和(自身を含む): 30909600

約数和(自身を除く): 9423453

約数列:

[1, 3, 17, 51, 53, 159, 901, 2703, 7949, 23847, 135133, 405399, 421297, 1263891, 7162049, 21486147]

約数ペア:

[(1, 21486147), (3, 7162049), (17, 1263891), (51, 421297), (53, 405399), (159, 135133), (901, 23847), (2703, 7949)]