21037256

素因数分解:

$2^3\times {\mathrm{19}}^1\times {\mathrm{138403}}^1$

素因数の和:138428

約数の個数: 16

約数和(自身を含む): 41521200

約数和(自身を除く): 20483944

約数列:

[1, 2, 4, 8, 19, 38, 76, 152, 138403, 276806, 553612, 1107224, 2629657, 5259314, 10518628, 21037256]

約数ペア:

[(1, 21037256), (2, 10518628), (4, 5259314), (8, 2629657), (19, 1107224), (38, 553612), (76, 276806), (152, 138403)]