665291240

素因数分解:

$2^3\times 5^1\times {\mathrm{67}}^1\times {\mathrm{248243}}^1$

素因数の和:248321

約数の個数: 32

約数和(自身を含む): 1519253280

約数和(自身を除く): 853962040

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 67, 134, 268, 335, 536, 670, 1340, 2680, 248243, 496486, 992972, 1241215, 1985944, 2482430, 4964860, 9929720, 16632281, 33264562, 66529124, 83161405, 133058248, 166322810, 332645620, 665291240]

約数ペア:

[(1, 665291240), (2, 332645620), (4, 166322810), (5, 133058248), (8, 83161405), (10, 66529124), (20, 33264562), (40, 16632281), (67, 9929720), (134, 4964860), (268, 2482430), (335, 1985944), (536, 1241215), (670, 992972), (1340, 496486), (2680, 248243)]