21291297286

素因数分解:

$2^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{80042471}}^1$

素因数の和:80042499

約数の個数: 16

約数和(自身を含む): 38420386560

約数和(自身を除く): 17129089274

約数列:

[1, 2, 7, 14, 19, 38, 133, 266, 80042471, 160084942, 560297297, 1120594594, 1520806949, 3041613898, 10645648643, 21291297286]

約数ペア:

[(1, 21291297286), (2, 10645648643), (7, 3041613898), (14, 1520806949), (19, 1120594594), (38, 560297297), (133, 160084942), (266, 80042471)]