218514140

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{840439}}^1$

素因数の和:840461

約数の個数: 24

約数和(自身を含む): 494178720

約数和(自身を除く): 275664580

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 840439, 1680878, 3361756, 4202195, 8404390, 10925707, 16808780, 21851414, 43702828, 54628535, 109257070, 218514140]

約数ペア:

[(1, 218514140), (2, 109257070), (4, 54628535), (5, 43702828), (10, 21851414), (13, 16808780), (20, 10925707), (26, 8404390), (52, 4202195), (65, 3361756), (130, 1680878), (260, 840439)]