21368779

素因数分解:

${\mathrm{17}}^1\times {\mathrm{67}}^1\times {\mathrm{73}}^1\times {\mathrm{257}}^1$

素因数の和:414

約数の個数: 16

約数和(自身を含む): 23368608

約数和(自身を除く): 1999829

約数列:

[1, 17, 67, 73, 257, 1139, 1241, 4369, 4891, 17219, 18761, 83147, 292723, 318937, 1256987, 21368779]

約数ペア:

[(1, 21368779), (17, 1256987), (67, 318937), (73, 292723), (257, 83147), (1139, 18761), (1241, 17219), (4369, 4891)]