21290545

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{13183}}^1$

素因数の和:13224

約数の個数: 16

約数和(自身を含む): 28477440

約数和(自身を除く): 7186895

約数列:

[1, 5, 17, 19, 85, 95, 323, 1615, 13183, 65915, 224111, 250477, 1120555, 1252385, 4258109, 21290545]

約数ペア:

[(1, 21290545), (5, 4258109), (17, 1252385), (19, 1120555), (85, 250477), (95, 224111), (323, 65915), (1615, 13183)]