21184851

素因数分解:

$3^1\times {\mathrm{101}}^1\times {\mathrm{139}}^1\times {\mathrm{503}}^1$

素因数の和:746

約数の個数: 16

約数和(自身を含む): 28788480

約数和(自身を除く): 7603629

約数列:

[1, 3, 101, 139, 303, 417, 503, 1509, 14039, 42117, 50803, 69917, 152409, 209751, 7061617, 21184851]

約数ペア:

[(1, 21184851), (3, 7061617), (101, 209751), (139, 152409), (303, 69917), (417, 50803), (503, 42117), (1509, 14039)]