21317648

素因数分解:

$2^4\times {\mathrm{11}}^1\times {\mathrm{121123}}^1$

素因数の和:121142

約数の個数: 20

約数和(自身を含む): 45058128

約数和(自身を除く): 23740480

約数列:

[1, 2, 4, 8, 11, 16, 22, 44, 88, 176, 121123, 242246, 484492, 968984, 1332353, 1937968, 2664706, 5329412, 10658824, 21317648]

約数ペア:

[(1, 21317648), (2, 10658824), (4, 5329412), (8, 2664706), (11, 1937968), (16, 1332353), (22, 968984), (44, 484492), (88, 242246), (176, 121123)]