21176679

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{419}}^1\times {\mathrm{991}}^1$

素因数の和:1430

約数の個数: 16

約数和(自身を含む): 29998080

約数和(自身を除く): 8821401

約数列:

[1, 3, 17, 51, 419, 991, 1257, 2973, 7123, 16847, 21369, 50541, 415229, 1245687, 7058893, 21176679]

約数ペア:

[(1, 21176679), (3, 7058893), (17, 1245687), (51, 415229), (419, 50541), (991, 21369), (1257, 16847), (2973, 7123)]