218140

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{839}}^1$

素因数の和:861

約数の個数: 24

約数和(自身を含む): 493920

約数和(自身を除く): 275780

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 839, 1678, 3356, 4195, 8390, 10907, 16780, 21814, 43628, 54535, 109070, 218140]

約数ペア:

[(1, 218140), (2, 109070), (4, 54535), (5, 43628), (10, 21814), (13, 16780), (20, 10907), (26, 8390), (52, 4195), (65, 3356), (130, 1678), (260, 839)]