218974760

素因数分解:

$2^3\times 5^1\times {\mathrm{67}}^1\times {\mathrm{81707}}^1$

素因数の和:81785

約数の個数: 32

約数和(自身を含む): 500052960

約数和(自身を除く): 281078200

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 67, 134, 268, 335, 536, 670, 1340, 2680, 81707, 163414, 326828, 408535, 653656, 817070, 1634140, 3268280, 5474369, 10948738, 21897476, 27371845, 43794952, 54743690, 109487380, 218974760]

約数ペア:

[(1, 218974760), (2, 109487380), (4, 54743690), (5, 43794952), (8, 27371845), (10, 21897476), (20, 10948738), (40, 5474369), (67, 3268280), (134, 1634140), (268, 817070), (335, 653656), (536, 408535), (670, 326828), (1340, 163414), (2680, 81707)]