21186940

素因数分解:

$2^2\times 5^1\times {\mathrm{37}}^1\times {\mathrm{28631}}^1$

素因数の和:28677

約数の個数: 24

約数和(自身を含む): 45696672

約数和(自身を除く): 24509732

約数列:

[1, 2, 4, 5, 10, 20, 37, 74, 148, 185, 370, 740, 28631, 57262, 114524, 143155, 286310, 572620, 1059347, 2118694, 4237388, 5296735, 10593470, 21186940]

約数ペア:

[(1, 21186940), (2, 10593470), (4, 5296735), (5, 4237388), (10, 2118694), (20, 1059347), (37, 572620), (74, 286310), (148, 143155), (185, 114524), (370, 57262), (740, 28631)]