21720747

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{113}}^1\times {\mathrm{3769}}^1$

素因数の和:3902

約数の個数: 16

約数和(自身を含む): 30944160

約数和(自身を除く): 9223413

約数列:

[1, 3, 17, 51, 113, 339, 1921, 3769, 5763, 11307, 64073, 192219, 425897, 1277691, 7240249, 21720747]

約数ペア:

[(1, 21720747), (3, 7240249), (17, 1277691), (51, 425897), (113, 192219), (339, 64073), (1921, 11307), (3769, 5763)]