21003376

素因数分解:

$2^4\times {\mathrm{509}}^1\times {\mathrm{2579}}^1$

素因数の和:3096

約数の個数: 20

約数和(自身を含む): 40789800

約数和(自身を除く): 19786424

約数列:

[1, 2, 4, 8, 16, 509, 1018, 2036, 2579, 4072, 5158, 8144, 10316, 20632, 41264, 1312711, 2625422, 5250844, 10501688, 21003376]

約数ペア:

[(1, 21003376), (2, 10501688), (4, 5250844), (8, 2625422), (16, 1312711), (509, 41264), (1018, 20632), (2036, 10316), (2579, 8144), (4072, 5158)]