21619976

素因数分解:

$2^3\times 7^3\times {\mathrm{7879}}^1$

素因数の和:7906

約数の個数: 32

約数和(自身を含む): 47280000

約数和(自身を除く): 25660024

約数列:

[1, 2, 4, 7, 8, 14, 28, 49, 56, 98, 196, 343, 392, 686, 1372, 2744, 7879, 15758, 31516, 55153, 63032, 110306, 220612, 386071, 441224, 772142, 1544284, 2702497, 3088568, 5404994, 10809988, 21619976]

約数ペア:

[(1, 21619976), (2, 10809988), (4, 5404994), (7, 3088568), (8, 2702497), (14, 1544284), (28, 772142), (49, 441224), (56, 386071), (98, 220612), (196, 110306), (343, 63032), (392, 55153), (686, 31516), (1372, 15758), (2744, 7879)]