21354963

素因数分解:

$3^1\times 7^1\times {\mathrm{673}}^1\times {\mathrm{1511}}^1$

素因数の和:2194

約数の個数: 16

約数和(自身を含む): 32610816

約数和(自身を除く): 11255853

約数列:

[1, 3, 7, 21, 673, 1511, 2019, 4533, 4711, 10577, 14133, 31731, 1016903, 3050709, 7118321, 21354963]

約数ペア:

[(1, 21354963), (3, 7118321), (7, 3050709), (21, 1016903), (673, 31731), (1511, 14133), (2019, 10577), (4533, 4711)]