320021480

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{67}}^1\times {\mathrm{2777}}^1$

素因数の和:2898

約数の個数: 64

約数和(自身を含む): 748059840

約数和(自身を除く): 428038360

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 67, 86, 134, 172, 215, 268, 335, 344, 430, 536, 670, 860, 1340, 1720, 2680, 2777, 2881, 5554, 5762, 11108, 11524, 13885, 14405, 22216, 23048, 27770, 28810, 55540, 57620, 111080, 115240, 119411, 186059, 238822, 372118, 477644, 597055, 744236, 930295, 955288, 1194110, 1488472, 1860590, 2388220, 3721180, 4776440, 7442360, 8000537, 16001074, 32002148, 40002685, 64004296, 80005370, 160010740, 320021480]

約数ペア:

[(1, 320021480), (2, 160010740), (4, 80005370), (5, 64004296), (8, 40002685), (10, 32002148), (20, 16001074), (40, 8000537), (43, 7442360), (67, 4776440), (86, 3721180), (134, 2388220), (172, 1860590), (215, 1488472), (268, 1194110), (335, 955288), (344, 930295), (430, 744236), (536, 597055), (670, 477644), (860, 372118), (1340, 238822), (1720, 186059), (2680, 119411), (2777, 115240), (2881, 111080), (5554, 57620), (5762, 55540), (11108, 28810), (11524, 27770), (13885, 23048), (14405, 22216)]