20876991

素因数分解:

$3^1\times {\mathrm{19}}^2\times {\mathrm{37}}^1\times {\mathrm{521}}^1$

素因数の和:599

約数の個数: 24

約数和(自身を含む): 30230064

約数和(自身を除く): 9353073

約数列:

[1, 3, 19, 37, 57, 111, 361, 521, 703, 1083, 1563, 2109, 9899, 13357, 19277, 29697, 40071, 57831, 188081, 366263, 564243, 1098789, 6958997, 20876991]

約数ペア:

[(1, 20876991), (3, 6958997), (19, 1098789), (37, 564243), (57, 366263), (111, 188081), (361, 57831), (521, 40071), (703, 29697), (1083, 19277), (1563, 13357), (2109, 9899)]