21120742

素因数分解:

$2^1\times {\mathrm{19}}^1\times {\mathrm{137}}^1\times {\mathrm{4057}}^1$

素因数の和:4215

約数の個数: 16

約数和(自身を含む): 33600240

約数和(自身を除く): 12479498

約数列:

[1, 2, 19, 38, 137, 274, 2603, 4057, 5206, 8114, 77083, 154166, 555809, 1111618, 10560371, 21120742]

約数ペア:

[(1, 21120742), (2, 10560371), (19, 1111618), (38, 555809), (137, 154166), (274, 77083), (2603, 8114), (4057, 5206)]