21118712

素因数分解:

$2^3\times {\mathrm{37}}^1\times {\mathrm{71347}}^1$

素因数の和:71390

約数の個数: 16

約数和(自身を含む): 40668360

約数和(自身を除く): 19549648

約数列:

[1, 2, 4, 8, 37, 74, 148, 296, 71347, 142694, 285388, 570776, 2639839, 5279678, 10559356, 21118712]

約数ペア:

[(1, 21118712), (2, 10559356), (4, 5279678), (8, 2639839), (37, 570776), (74, 285388), (148, 142694), (296, 71347)]