21848515

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{7817}}^1$

素因数の和:7878

約数の個数: 16

約数和(自身を含む): 28895328

約数和(自身を除く): 7046813

約数列:

[1, 5, 13, 43, 65, 215, 559, 2795, 7817, 39085, 101621, 336131, 508105, 1680655, 4369703, 21848515]

約数ペア:

[(1, 21848515), (5, 4369703), (13, 1680655), (43, 508105), (65, 336131), (215, 101621), (559, 39085), (2795, 7817)]