209964478

素因数分解:

$2^1\times {\mathrm{19}}^1\times {\mathrm{1381}}^1\times {\mathrm{4001}}^1$

素因数の和:5403

約数の個数: 16

約数和(自身を含む): 331845840

約数和(自身を除く): 121881362

約数列:

[1, 2, 19, 38, 1381, 2762, 4001, 8002, 26239, 52478, 76019, 152038, 5525381, 11050762, 104982239, 209964478]

約数ペア:

[(1, 209964478), (2, 104982239), (19, 11050762), (38, 5525381), (1381, 152038), (2762, 76019), (4001, 52478), (8002, 26239)]