21670887

素因数分解:

$3^1\times 7^2\times {\mathrm{19}}^1\times {\mathrm{7759}}^1$

素因数の和:7795

約数の個数: 24

約数和(自身を含む): 35385600

約数和(自身を除く): 13714713

約数列:

[1, 3, 7, 19, 21, 49, 57, 133, 147, 399, 931, 2793, 7759, 23277, 54313, 147421, 162939, 380191, 442263, 1031947, 1140573, 3095841, 7223629, 21670887]

約数ペア:

[(1, 21670887), (3, 7223629), (7, 3095841), (19, 1140573), (21, 1031947), (49, 442263), (57, 380191), (133, 162939), (147, 147421), (399, 54313), (931, 23277), (2793, 7759)]