21131686

素因数分解:

$2^1\times {\mathrm{19}}^1\times {\mathrm{103}}^1\times {\mathrm{5399}}^1$

素因数の和:5523

約数の個数: 16

約数和(自身を含む): 33696000

約数和(自身を除く): 12564314

約数列:

[1, 2, 19, 38, 103, 206, 1957, 3914, 5399, 10798, 102581, 205162, 556097, 1112194, 10565843, 21131686]

約数ペア:

[(1, 21131686), (2, 10565843), (19, 1112194), (38, 556097), (103, 205162), (206, 102581), (1957, 10798), (3914, 5399)]