20903871891

素因数分解:

$3^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{2447}}^1\times {\mathrm{23929}}^1$

素因数の和:26403

約数の個数: 32

約数和(自身を含む): 33742448640

約数和(自身を除く): 12838576749

約数列:

[1, 3, 7, 17, 21, 51, 119, 357, 2447, 7341, 17129, 23929, 41599, 51387, 71787, 124797, 167503, 291193, 406793, 502509, 873579, 1220379, 2847551, 8542653, 58554263, 175662789, 409879841, 995422471, 1229639523, 2986267413, 6967957297, 20903871891]

約数ペア:

[(1, 20903871891), (3, 6967957297), (7, 2986267413), (17, 1229639523), (21, 995422471), (51, 409879841), (119, 175662789), (357, 58554263), (2447, 8542653), (7341, 2847551), (17129, 1220379), (23929, 873579), (41599, 502509), (51387, 406793), (71787, 291193), (124797, 167503)]