215252120

素因数分解:

$2^3\times 5^1\times {\mathrm{71}}^1\times {\mathrm{75793}}^1$

素因数の和:75875

約数の個数: 32

約数和(自身を含む): 491145120

約数和(自身を除く): 275893000

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 71, 142, 284, 355, 568, 710, 1420, 2840, 75793, 151586, 303172, 378965, 606344, 757930, 1515860, 3031720, 5381303, 10762606, 21525212, 26906515, 43050424, 53813030, 107626060, 215252120]

約数ペア:

[(1, 215252120), (2, 107626060), (4, 53813030), (5, 43050424), (8, 26906515), (10, 21525212), (20, 10762606), (40, 5381303), (71, 3031720), (142, 1515860), (284, 757930), (355, 606344), (568, 378965), (710, 303172), (1420, 151586), (2840, 75793)]