28453960

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{71}}^1\times {\mathrm{233}}^1$

素因数の和:358

約数の個数: 64

約数和(自身を含む): 66718080

約数和(自身を除く): 38264120

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 71, 86, 142, 172, 215, 233, 284, 344, 355, 430, 466, 568, 710, 860, 932, 1165, 1420, 1720, 1864, 2330, 2840, 3053, 4660, 6106, 9320, 10019, 12212, 15265, 16543, 20038, 24424, 30530, 33086, 40076, 50095, 61060, 66172, 80152, 82715, 100190, 122120, 132344, 165430, 200380, 330860, 400760, 661720, 711349, 1422698, 2845396, 3556745, 5690792, 7113490, 14226980, 28453960]

約数ペア:

[(1, 28453960), (2, 14226980), (4, 7113490), (5, 5690792), (8, 3556745), (10, 2845396), (20, 1422698), (40, 711349), (43, 661720), (71, 400760), (86, 330860), (142, 200380), (172, 165430), (215, 132344), (233, 122120), (284, 100190), (344, 82715), (355, 80152), (430, 66172), (466, 61060), (568, 50095), (710, 40076), (860, 33086), (932, 30530), (1165, 24424), (1420, 20038), (1720, 16543), (1864, 15265), (2330, 12212), (2840, 10019), (3053, 9320), (4660, 6106)]