21709386

素因数分解:

$2^1\times 3^2\times {\mathrm{71}}^1\times {\mathrm{16987}}^1$

素因数の和:17066

約数の個数: 24

約数和(自身を含む): 47702304

約数和(自身を除く): 25992918

約数列:

[1, 2, 3, 6, 9, 18, 71, 142, 213, 426, 639, 1278, 16987, 33974, 50961, 101922, 152883, 305766, 1206077, 2412154, 3618231, 7236462, 10854693, 21709386]

約数ペア:

[(1, 21709386), (2, 10854693), (3, 7236462), (6, 3618231), (9, 2412154), (18, 1206077), (71, 305766), (142, 152883), (213, 101922), (426, 50961), (639, 33974), (1278, 16987)]