20481069

素因数分解:

$3^1\times 7^2\times {\mathrm{19}}^1\times {\mathrm{7333}}^1$

素因数の和:7369

約数の個数: 24

約数和(自身を含む): 33443040

約数和(自身を除く): 12961971

約数列:

[1, 3, 7, 19, 21, 49, 57, 133, 147, 399, 931, 2793, 7333, 21999, 51331, 139327, 153993, 359317, 417981, 975289, 1077951, 2925867, 6827023, 20481069]

約数ペア:

[(1, 20481069), (3, 6827023), (7, 2925867), (19, 1077951), (21, 975289), (49, 417981), (57, 359317), (133, 153993), (147, 139327), (399, 51331), (931, 21999), (2793, 7333)]